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Share your dilemmas and get honest opinions from other Mumsnetters.

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

746 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:
Katemax82 · Yesterday 13:04

ConnieHeart · Yesterday 09:55

@Katemax82oh god, I bet you didn't drink again for quite some time!

I once puked in the back of a taxi & just paid him the normal fare & got out. Poor guy. He didn't even seem to notice somehow! I was about 17

I still feel absolutely awful for that poor driver

Midlifecrisisaverted · Yesterday 13:07

Katemax82 · Yesterday 13:04

I still feel absolutely awful for that poor driver

I've done that. Puked on a hotel room carpet too and just gave it a cursory rub and then left... 🙈

8TinyToeBeans · Yesterday 13:10

Didn’t attend my gran or granny’s funeral. It was on the other side of the country and I have terrible fear of travel. For me, I know I paid my respects privately but I’m ashamed that people (other than my parents) will have just assumed I couldn’t be arsed. Especially since I attended my grandpa's but at the time I still lived local so the travel was less of an issue although I was still terrified.

Katemax82 · Yesterday 13:11

Just remembered one...I was working in Clarke's shoes. A couple came in with a baby and a 3 year old. I fitted the baby with shoes and the 3 year old wanted new shoes but I got the feeling the couple weren't keen on spending too much. I checked his shoes and said he still had growing room because they were only going to buy new ones if he had outgrown his. I was also keen to not appear to be trying to make them spend money. The kid cried at not getting new shoes and I still feel rubbish about it. I should have just said yes he needs new shoes and not cared if the parents could afford it

Katemax82 · Yesterday 13:12

Midlifecrisisaverted · Yesterday 13:07

I've done that. Puked on a hotel room carpet too and just gave it a cursory rub and then left... 🙈

Yes but that's not as bad as covering a man AND his lively hood! I'm a monster

Thatoneisnice · Yesterday 13:16

I slept with two men in the same day and i was in a relationship with them both and they didnt know about each other..
But strangely i dont feel guilty as i was 20 years old and they were both twats. Deep down im quite impressed with myself. I was usually a sweet natured people pleaser and both those guys were quite manipulative. The whole thing was out of character for me and didnt last long. But i felt powerful tbh.
Of course it was also awful and sad and unhealthy. I shouldnt have been with either of them.

Something i do feel guilty about is that i was quite troubled in my late teens and had an amphetamine addiction. I was still trying to go to college at 18 but it was a course i had to pay for. I was living away from home and not in contact with my parents. My nan was quite supportive and tried to help me by paying the course fees.
She put the money into my account and instead of paying the fees i withdrew it all and bought a massive amount of speed. I couldnt then pay for the course and dropped out
I think thats probably the worst thing ive ever done as my nan wasnt wealthy and would have sacrificed things in order to send that money

cheekynamechang3 · Yesterday 13:21

Notasbigasithink · Yesterday 09:45

But then I wouldn't have been wet and he'd have wanted to know why I'd turned the shower on! It was 25yrs ago, I lacked rational thought....

you could have quickly popped in the shower. that's what I would have done. or you could have said there was a dead spider in the shower and you wanted to wash it away.

cheekynamechang3 · Yesterday 13:23

ChiliFiend · Yesterday 11:44

I 100% agree. Especially "poor things, asked so many times lol." That is really fucked up, laughing at how you treated people unfairly. Frankly I hope her daughter gets messed around in the same way in her next job.

she won't need to as she'll get mummy's job when she retires.

Hernameisdeborah · Yesterday 13:28

Shatandfattered · Yesterday 10:39

Really? Deliberately lying about cancer, befriending women to steal their man, stealing, violence.... And this is the worst 😐

It’s more the apparent pride the poster has taken in this which is the issue. The “poor things, lol”. Plus, it ultimately isn’t very helpful for her daughter either. Others on here actually feel remorse for their mistakes and have tried to learn from them.

Allseeingallknowing · Yesterday 13:28

Freda69 · Yesterday 12:35

So glad I saw your comment. Thought I was really bad!
I had sex with 2 men in one evening. Hot summer night in 1974. Never told anyone that.

Those two posts seem more like boasting , morally not good, but not the worst thing in the world to have done,

tommyhoundmum · Yesterday 13:30

iamfedupwiththis · 20/04/2026 17:28

Not sure if having a poo outside as I was desperate is better or worse than an affair.

Always carry a doggy bag

CoffeeCantata · Yesterday 13:30

HearMeSnore · Yesterday 09:51

I’m really grateful for this thread. I’ve been going through a lot of self-doubt lately and beating myself up for past mistakes. Knowing that I’m not alone, nobody is perfect and we’ve all done things we’re ashamed of has helped me gain some perspective. Love to all you wonderfully awful people!

And I would add that the people on this thread, with one notable exception, feel remorse for what they did. So in my book that makes them good people!

There are lots of people out there who never give their behaviour (past or present) a second thought. They just do what serves them and hang everyone else, and certainly don't lose sleep over it. And I know from experience that this applies to many people who might call themselves religious, or who hold positions of trust in society.

So don't feel bad! We're all imperfect, but what matters, I think, is how you move on from these things. If you reflect, feel bad and resolve to either make amends (not always possible) or to be better in the future, that's what defines your worth as a person.

People who LOL, however....there's no hope....

Thelittleweasel · Yesterday 13:31

@SabrinaThwaite

For some inexplicable reason I love the detail in this ...😃

Neurodiversitydoctor · Yesterday 13:31

Whatexcellentboiledpotatoes · 20/04/2026 20:10

I had a poo in a size 3 nappy on the middle of my kitchen as a fully grown adult once. So you're good.

Edited

Why ? That is so random

AttentionPlease · Yesterday 13:32

Allseeingallknowing · Yesterday 13:28

Those two posts seem more like boasting , morally not good, but not the worst thing in the world to have done,

It’s morally a completely neutral thing to have done. Assuming everyone involved was consenting and adult. Why do you imagine it’s ’morally not good’?

x2boys · Yesterday 13:33

cheekynamechang3 · Yesterday 13:23

she won't need to as she'll get mummy's job when she retires.

Maybe ,but the pp says she works for the local authority
Ime workin for the NHS slso public sector
There can be a lot of restructuring,with people being moved around
Things are not guranteed and with out mummy to hold her hand the daughter may juat find she has bitten more than she can chew.

Illegally18 · Yesterday 13:37

AttentionPlease · Yesterday 13:32

It’s morally a completely neutral thing to have done. Assuming everyone involved was consenting and adult. Why do you imagine it’s ’morally not good’?

Exactly!

greyweek · Yesterday 13:39

Nollie · 20/04/2026 17:26

Funnily enough, I've been thinking lately about some of the things I did when I was younger and they don't reflect very well on me at all. Ultimately I only have myself to blame but I do wish I had been given more attention and moral guidance when I was growing up.

I feel like this too. I regret many thoughtless things I said when younger, that would’ve hurt others’ feelings. I may be a much better person now, after years of reading, learning, reflecting, but I am paying the price in lost childhood/ potential friendships.
But if you’ve met my mum and older siblings you’d know why I was the way I was.

Mangelwurzelfortea · Yesterday 13:41

I used to live with a guy (in a two-bed flat - we weren't friends, it was just a flatshare) who had a massive jar of pound coins outside his room and I used to steal them to pay for my bus fare to work (I was extremely skint at the time). In my defence, he was a massive twat who expected me to cook and clean and got stroppy when I didn't, and also tried it on with me. The ceiling fell in over his bed one evening and that felt like karma.

MyDeftDuck · Yesterday 13:43

Sortingmyself · Yesterday 12:01

ooo I might try this on my nasty neighbour too.

It works with dandelion seeds too……place a few in the tray before freezing…..pop the cubes out and harvest dandelions to your heart’s content 😜😜

Mangelwurzelfortea · Yesterday 13:44

greyweek · Yesterday 13:39

I feel like this too. I regret many thoughtless things I said when younger, that would’ve hurt others’ feelings. I may be a much better person now, after years of reading, learning, reflecting, but I am paying the price in lost childhood/ potential friendships.
But if you’ve met my mum and older siblings you’d know why I was the way I was.

Don't we all do twatty things in our late teens/20s though? I can remember some horrible thoughtless things I said which make me cringe looking back, and I also slept with some idiotic guys, was careless about breaking hearts, and upset some of my friends unnecessarily. I regret all of that but I do know I am a better person now, probably because of it.

cheekynamechang3 · Yesterday 13:45

x2boys · Yesterday 13:33

Maybe ,but the pp says she works for the local authority
Ime workin for the NHS slso public sector
There can be a lot of restructuring,with people being moved around
Things are not guranteed and with out mummy to hold her hand the daughter may juat find she has bitten more than she can chew.

We can only hope.

DontGoChasinWaterfalls · Yesterday 13:46

I put bleach in my abusive exes washing detergent on the day I left him whilst he was at work.
I'd love to have seen his face after his black work uniform came out the wash!

AttentionPlease · Yesterday 13:49

DontGoChasinWaterfalls · Yesterday 13:46

I put bleach in my abusive exes washing detergent on the day I left him whilst he was at work.
I'd love to have seen his face after his black work uniform came out the wash!

I misread the beginning of this as ‘I put bleach in my abusive ex’s eyes’ and was just about to be genuinely aghast after a thread of generally meek misdemeanours!

I’m sure he looked adorable in his mottled, stonewash-effect uniform.

Allseeingallknowing · Yesterday 13:50

AttentionPlease · Yesterday 13:32

It’s morally a completely neutral thing to have done. Assuming everyone involved was consenting and adult. Why do you imagine it’s ’morally not good’?

That’s my opinion, obviously others will feel differently. Why post on this thread, which is about the worst thing you’ve ever done, if it’s not a bad thing?

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