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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

What’s the worst thing you’ve ever done?

677 replies

shehardlysleeps · 20/04/2026 17:18

I’m in a reflective mood, and it’s got me thinking about something I did a few years ago which is probably the thing I’m most deeply ashamed of.

There was a coworker who really rubbed me up the wrong way. I was very unhappy at the time, and going through an awful time personally. She would make snide comments about me, do things with my family members (who were colleagues too) which really got my back up, I felt like she judged me harshly and was pretty rude. Along with another colleague they made three or four very nasty comments which still stick with me.

Instead of raising a grievance, which I should have done, I took to posting about her on another website (along the lines of Mumsnet), not realising she used it too. She saw the posts and reported me, and I ended up facing a meeting with HR and a senior partner of the firm I was working in. It damaged my reputation within the firm forever and I ended up leaving after not being offered a promotion. I still feel ashamed of it now, nearly half a decade on, and feel like it’s tarred me forever.

Whats the worst thing you’ve ever done?

OP posts:
Ihateboris · 20/04/2026 20:51

DreamyScroller · 20/04/2026 20:44

Some of the things PPs have mentioned are pretty bad. Some are so tame they make me feel like a monster by comparison.

I've done so many things I'm ashamed of. Some are objectively horrific. I've betrayed people I cared about or let them down horribly because of selfishness. I've used and even hurt people for my own amusement. I've sunk to the very bottom of the pit of self destructiveness. I've been weak, lazy, opportunistic, and cruel at the expense of others. I've broken almost all of my own ethical standards at some point or another. I have broken all of the Ten Commandments.

I know there might be some leeway for poor mental health, poor upbringing/guidance, substance misuse, youth, etc. And I do believe in redemption and forgiveness. I believe in the grace of God.

But I still did those things. Sometimes they haunt me, and I am consumed by regret and shame.

But I'm trying to be a better person. I think I'm succeeding, at least somewhat, so far.

The fact that you are trying to be a better person, means you are definitely not a monster 🌷

Dollymylove · 20/04/2026 20:52

igelkott2026 · 20/04/2026 20:47

There are men I slept with who I shouldn't have done and men I should have slept with who I didn't!

Same here!!!

igelkott2026 · 20/04/2026 20:53

ainsleysanob · 20/04/2026 18:39

I worked as a Saturday girl in a high end clothes shop when I was a teenager. I was paid a handsome £20 per day. I was stacking a new line of D&G jeans to place out on the shelves and sneezed ferociously. The biggest snot globule exited my nose and splattered on the ridiculously priced designer jeans that I would have had to work a Millenia of Saturdays to buy. So I just stacked another pair on top of them and stuck them on the shelf for unsuspecting customer to discover.

You've reminded me of when I had a Saturday job in a record shop. The sleeves were separate to the actual records or cassettes or CDs to avoid shop-lifting and one time someone brought a record sleeve to the counter for me to find the actual record and sell it to them.

I just couldn't find it. So I put a different record in the sleeve and sold it to them.

I still feel bad that that person had to come back to the shop and probably took it out on one of my weekday colleagues. And they might have given it as a present and then that person had the hassle of it. It was so bad of me.

This was in 1988 so I suppose they've got over it now.

Squeeky112 · 20/04/2026 20:55

Elanol · 20/04/2026 17:56

Then that would become the worst thing you've ever done 😁

Not necessarily... 😜

SJGFlingo · 20/04/2026 20:57

Well.

I was a young pup and I cheated on my first husband who was serving in Afghanistan at the time - with his own cousin, got pregnant, had an abortion and passed it off as a miscarriage. Husband was home on R&R a week later and I managed to fiddle the dates. His cousin knew rightly and was applying serious pressure on me to come clean.

I’m not even sure if that’s the worst I’ve done tbh. But it’s the first thing that comes to mind. No regrets. Married now to a lovely man and I’m a very sensible mother. A lifetime ago.

Hotsirballloon · 20/04/2026 20:57

Mine was when i was convicted of arson. In my defence I just had a stillborn but my ex cheated on me and the stress made me lose my little boy so once I left the hospital I set fire to his garage (.man cave where he would invite her whilst I was asleep) . Got a 4 month stretch and I ruined alot of my future plans however interestingly his own mother was fuming at him for calling the police and said he should have worked with me or moved out but he refused to empty the man cave and seeing it enraged me.

the biggest consequence to my actions however I would do it again tomorrow if I felt how I felt that day and I knew no one was going to get hurt.

VeterinaryCareAssistant · 20/04/2026 20:57

Friedeggswelldoneplease · 20/04/2026 18:57

What did you do?

Maybe fed it something poisonous?

Britainisgreat · 20/04/2026 20:59

BEAT THIS THEN. Scammed HMV out of thousands of quid. Bought VHS videos in Woolies. £2.99 each, the films Fly Away Home. Matilda and Brassed Off. Boxes full sometimes. Managers asked why I was buying so many. Took them in HMV, no receipt of course and got credits or CD's for £14.99 or £16.99.or each one. That's what hey scanned at. Did it hundreds of times, they never refused me and gave me vouchers too if I didn't want any good. Then just got bored. Good scheme though eh? Clever. I couldn't believe how they were so dumb as not to see the same vidoes being returned faulty. Several London branches, some in Sheffield when viditing my mum and even did a few in Boots, Tower records. Have over 1000 CD's, most obtained fraudulenty. Had hundreds of quids worth of vouchers at one point.

smilingontheinside · 20/04/2026 20:59

LapisBlue · 20/04/2026 19:15

Oh yes marrying my now ex-husband was by FAR the worst thing I've ever done - by a country mile, whatever that is when it's at home.

You and me both. My gut told me 2 weeks before my wedding not to go through with it but I ignored it. Wasted both our lives for 40+ years!!

KeeleyJ · 20/04/2026 20:59

Auroraloves · 20/04/2026 18:19

Ooops it was obviously an accident though

Yes, definitely an 'accident'.....

polkadotpixie · 20/04/2026 20:59

I have done some shitty things, I cheated on my boyfriend multiple times when I was in my early 20s and also slept with someone else’s boyfriend more than once

I got my workmate fired because she had a drinking problem and came to work drunk. I was sick of picking up the slack for her and secretly quite enjoyed being the boss’s favourite so I not only refused to testify in her defence at her disciplinary, I actually did the opposite and she was fired. Her drinking escalated further and she died within a couple of years, I feel really guilty

I also didn’t clean my hamster out enough when I was a teenager, I think I actually feel more guilty about that than anything

Calliopespa · 20/04/2026 20:59

wellerrrrrm · 20/04/2026 18:23

I was mean at school. I used to hide things after PE so my friends couldn’t get changed. I have no idea why. I hid my friends pyjama bottoms on a sleepover - I really feel bad about that; she was lovely and have no idea why I was so spiteful.

That sounds like a control issue.

Tryingtomybetter · 20/04/2026 21:00

I was an awful person. I was raised by two highly abusive parents. Rich parents but I had nothing at all. Literally a packed lunch was ‘weeks old bread’ and a yogurt. They never had time and what time they did have they were screaming or beating me. My father has very unusual nasty viewpoints. Multimillionaires with what seemed like fists made for punching me in the head. The emotional abuse was worse.

I lied. I stole. I hurt absolutely anyone I could. Eg nice boyfriend and dump him and make him cry.
I couldn’t do nice.
if I hit a car wing mirror, I carried on, I drove past it.

I ghosted people. I would terminate friendships with zero notice.

I was nasty. I married an abuser and it was a horrific divorce. He beat me to a pulp and I lost a baby.
I then got myself pregnant (with someone else) deliberately as I wanted a baby. I married him. He was abusive but my first divorce had taught me well. So I saved evidence. I was careful about texts and emails and knew exactly what to do to maximise my outcome. That was 15 years ago. I got a restraining order against him. He was abusive but my god I ripped him apart and tore his life apart. He fought back but I predicted every possible turn and basically screwed him over. He has ended up sad and alone and miles away from us and is very lonely.

I had 5 years of therapy. I spent a further 10 years alone. Then had more therapy. I then met DH and my life suddenly made sense. I was diagnosed with autism and ADHD and PTSD and realised I was totally broken not due to ND but because I was so damaged. The only thing I was really was a good mum.

I have been over 10 years with no contact with my very much alive parents who live 5 minutes away.

Sometimes I pinch myself that I wake up with my wonderful husband who comforts me when I cry, holds me at night and loves me. I have great kids who are ND but secure and well adjusted and loved and happy. I am so lucky I have huge struggles daily due to my ADHD and autism and I do struggle at work - I know I could walk away and my husband would support me. Every day I strive to be a better person and do something kind.

NoisyHiker · 20/04/2026 21:01

Nothing as an adult.

But I could be a bully as a child. I never physically hurt anyone, but I said cruel things sometimes. It's strange but I felt guilty and bad about it immediately after, but I still did it. I was being bullied without mercy at home, but it's still no excuse really.

When I remember it now I feel a deep shame.

Calliopespa · 20/04/2026 21:02

Britainisgreat · 20/04/2026 20:59

BEAT THIS THEN. Scammed HMV out of thousands of quid. Bought VHS videos in Woolies. £2.99 each, the films Fly Away Home. Matilda and Brassed Off. Boxes full sometimes. Managers asked why I was buying so many. Took them in HMV, no receipt of course and got credits or CD's for £14.99 or £16.99.or each one. That's what hey scanned at. Did it hundreds of times, they never refused me and gave me vouchers too if I didn't want any good. Then just got bored. Good scheme though eh? Clever. I couldn't believe how they were so dumb as not to see the same vidoes being returned faulty. Several London branches, some in Sheffield when viditing my mum and even did a few in Boots, Tower records. Have over 1000 CD's, most obtained fraudulenty. Had hundreds of quids worth of vouchers at one point.

Edited

Clever in the way that taking something that belongs to someone else is clever. It was really just theft with an extra step wasn't it?.

Imfukinradiant · 20/04/2026 21:02

moderndilemma · 20/04/2026 19:06

Oh I empathise with you.

I was a sullen cow when my sister was getting married. tbf (to me) I was 18 and still lived at home. Every part of our household was focussed on 'the wedding'. There was an engagement party (and lots of gifts), then there was all the choosing the wedding dress faff - she was lovely, looked great in them all, why all the trailing around shop after shop? I was a bridesmaid and all I wanted was to be chic and sophisticated (preferably in deep dark red and very sexy) and not wrapped up in peach lace (it was the 1980s). dsis vetoed every dress I liked and I ended up with a flouncy pale peach flowery bedspread. Homemade by my Mum. I huffed and puffed at every fitting.

Dsis lived away from home so whenever she came back all the conversation was about 'the wedding'. Other visitors came and said "oh you must be so excited about 'the wedding'". I was not. I was bored of it. And I was probably quite jealous of all the excitement and the attention on my sister.

All the photos show me with the moodiest face ever. Sorry dsis.

I think I’m the third sister in this scenario 😂😂

Greendiamondbee · 20/04/2026 21:05

Poohed in my back garden, poohed in a bin, poohed myself 💩

BrickBiscuit · 20/04/2026 21:05

Error404FucksNotFound · 20/04/2026 20:44

There is no way I would ever tell the Internet the worst thing I've done because we only think we're anonymous and I really don't want to get arrested.

You're right, never take that risk. I knew someone who I didn't know was into organised crime. They used Encrochat, as a foolproof untraceable communications tool. Except European police hacked it and caught hundreds of them. They really thought they were genuinely anonymous. They got a 20 stretch.

Britainisgreat · 20/04/2026 21:05

Calliopespa · 20/04/2026 21:02

Clever in the way that taking something that belongs to someone else is clever. It was really just theft with an extra step wasn't it?.

Well maybe fraud not theft as they gave me them, no quibble. If HMV contact me now,, will just say am joking.. Can't prove it. .No wonder they went bust. Should have had algorithms to flag it up.

Calliopespa · 20/04/2026 21:05

Jumbledpie · 20/04/2026 19:12

I have name-changed for these because I know they're pretty bad...

I once shat in a plastic bag in the passenger seat of my car and dumped it in a stranger's wheels bin. I had been away camping and eaten some questionable meat, all seemed fine until I was on the drive home. I wasn't going to make it but was driving through a residential estate at night. I found the most private place I could and jumped into the passenger seat with the plastic bag but I was pooing water. I still had another hour to go home and was worried about this watery shit ending up on my seat so put it in the nearest bin I could find which happened to be some random person's wheely bin.

The other one is that I once woke up to my old flatmate on top of me in bed, trying to pull my pyjama bottoms off while I slept. The next day I cleaned the toilet with his toothbrush before moving my stuff out.

Both perfectly reasonable if you ask me.

Allisnotlost1 · 20/04/2026 21:06

DreamyScroller · 20/04/2026 20:44

Some of the things PPs have mentioned are pretty bad. Some are so tame they make me feel like a monster by comparison.

I've done so many things I'm ashamed of. Some are objectively horrific. I've betrayed people I cared about or let them down horribly because of selfishness. I've used and even hurt people for my own amusement. I've sunk to the very bottom of the pit of self destructiveness. I've been weak, lazy, opportunistic, and cruel at the expense of others. I've broken almost all of my own ethical standards at some point or another. I have broken all of the Ten Commandments.

I know there might be some leeway for poor mental health, poor upbringing/guidance, substance misuse, youth, etc. And I do believe in redemption and forgiveness. I believe in the grace of God.

But I still did those things. Sometimes they haunt me, and I am consumed by regret and shame.

But I'm trying to be a better person. I think I'm succeeding, at least somewhat, so far.

If you really have broken all of them, then you presumably also received some punishment. So for at least some of those things you have paid your debt, and if you’re trying - and doing the necessary things to support that trying - then you deserve a happier future.

ComfyKnickers · 20/04/2026 21:06

When I was a young teacher I had an affair with the (married with 2 children at the school) deputy head.

A rumour when round about us, much whispering, people taking sides, etc etc, and he punched a colleague at the end of year staff party.

He lost his role as deputy head. I was already leaving and had a new exciting role overseas so just left it all behind me.

I do think about him sometimes, but I'm old and happily married now.

Britainisgreat · 20/04/2026 21:07

Just joking HMV. Nobody would have the audacity to do that.

Beachforever · 20/04/2026 21:07

I was thinking about this the other day after seeing The Drama at the cinema. By comparison to the characters in that film I’ve been an angel!

I guess the worst I’ve done is sleep around a bit during 6th form including regularly having sex with one of my male friends behind his girlfriend’s back.

But I don’t beat myself up about that now. I had a shitty home life and I was young and searching for an escape from my feelings.

Calliopespa · 20/04/2026 21:07

Britainisgreat · 20/04/2026 21:05

Well maybe fraud not theft as they gave me them, no quibble. If HMV contact me now,, will just say am joking.. Can't prove it. .No wonder they went bust. Should have had algorithms to flag it up.

Edited

I can see as a young teen it might be exciting to try it for the frisson of getting away with it once or twice, but thousands of pounds is a lot of times!