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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:
TheApollasMrCreatorNSOL · 20/04/2026 18:27

DomesticArchaeologist · 20/04/2026 18:16

That and the fish-in-shoes story sound like they have a detailed back story 🤣

He was a horrible git..also washed his cup in the toilet.
I was young and didn't give two fucks best bit was I outlasted him as he got pinged for being useless

StonwEd · 20/04/2026 18:28

shehardlysleeps · 20/04/2026 17:28

This is how I feel. I was almost raised to think that things like this were free of consequences

I wish my parents had talked to me more about consequences and disciplined more. My mum gave up very easily and never followed through on anything she said.

I've done so much stupid shit I hate myself for.
Trying to be a better person in my 40s - shame my kids are grown up now and I couldn't have been better for them when they were young.
I got in a drunk friends car because I fancied him. Id left the kids at home with my husband and just gone out. He nearly crashed. That really really scared me.

LapisBlue · 20/04/2026 18:28

Another one: on a weekend with my sister in New York 25 years ago, we got pissed the night before and I threw up in Bergdorff and Goodman. Think a posher, classier version of Harvey Nicks.

Lovely. Invite me back anytime.

SabrinaThwaite · 20/04/2026 18:30

TheApollasMrCreatorNSOL · 20/04/2026 18:14

Remember setting fire to a managers broadsheet paper
Whilst he was reading it.

Brava!

takealettermsjones · 20/04/2026 18:30

I stole, quite often. But in my defence I was Dickensian poor and actually hungry.

Many moons later... I did something that I think is possibly a bit sneaky but fair game (nothing illegal, involves lying, but I did it for very good reasons), but my DH was really upset by it. It blew up, we dealt with it but it did make things hard for a while. I obviously regret the fallout but the bad thing is... I still don't actually feel bad for doing what I did! Obviously I won't do it again because I now know how he feels but I think he was being ludicrous about it. 🤭

SerendipityCat · 20/04/2026 18:31

Accidentally killed a duck, or at least contributed to a duck's death. I was about 10, and skimming flat stones across a local pond. I found a perfectly shaped, perfectly weighted stone and launched it with all my might. It skipped beautifully a couple of times and hit an unfortunate mallard drake smack on the back of the head. It gave a piteous quack, its neck fell to the side at an odd angle, and it started paddling in circles. As if I wasn't horrified enough, three or four other drakes immediately attacked it, and pecked it to death.

I still feel guilty nearly 60 years on!

MycactusandI · 20/04/2026 18:32

SerendipityCat · 20/04/2026 18:31

Accidentally killed a duck, or at least contributed to a duck's death. I was about 10, and skimming flat stones across a local pond. I found a perfectly shaped, perfectly weighted stone and launched it with all my might. It skipped beautifully a couple of times and hit an unfortunate mallard drake smack on the back of the head. It gave a piteous quack, its neck fell to the side at an odd angle, and it started paddling in circles. As if I wasn't horrified enough, three or four other drakes immediately attacked it, and pecked it to death.

I still feel guilty nearly 60 years on!

Assume you've seen 'about a boy'

WellConfusedandDazed · 20/04/2026 18:33

LapisBlue · 20/04/2026 17:44

I slept with two men on one day. On two separate occasions, four guys in total, as it were.

Meh. Were you cheating? If not I don’t think this is bad at all.

csandsickofit · 20/04/2026 18:35

Does karma still happen if the nasty person is genuinely sorry?
when I was young (14, many many years ago) I was really mean to a guy. I still think about it, and I am mortified. Only excuse was I was childish and stupid. I actually tried to contact him a few years ago via FB but he never replied. I would really just like to tell him that I am so so sorry, and that over 50 years on I am still aghast as how mean I was.

Jaggy1 · 20/04/2026 18:35

Had a group of four best friends through school. Drunkenly & probably fuelled by jealousy/low self esteem slept with one of their boyfriends. Was a terrible thing & it still makes me feel awful despite being when we were all 17/18. They broke up and got back together about 4 times afterwards and everyone rightly fell out with me, got weeks of abuse on Facebook/texts etc. Got punched a year later when I bumped in to her in a pub. Never spoken to a single person from school since & never plan to.

have coincidentally found out since that 2 of them are now police officers engaged in separate affairs with married colleagues. So in a way it was the worst thing I ever did, but the best for a personal growth stand point as I would never ever hurt anyone like that again& can’t believe they’re okay with that given what I did to them. It still gives me a horrible feeling just to admit it to strangers, it really plagued me for life & am only just now starting to understand what it was about me that made me do it.

SerendipityCat · 20/04/2026 18:36

MycactusandI · 20/04/2026 18:32

Assume you've seen 'about a boy'

I haven't - don't tell there's a duck killing scene in it? I honestly didn't know.

SabrinaThwaite · 20/04/2026 18:37

dizzydizzydizzy · 20/04/2026 18:15

hahaha! Why?

He rang to say he was just leaving work and would be home in half an hour. So I cooked dinner to be ready when he arrived.

Except he didn’t arrive. He rolled in 5 hours late because his colleagues (and his lift) went to the pub. Pre mobile phones but he didn’t use the pub pay phone either. He staggered in pissed as a fart without saying a word, put his shoes on the kitchen counter next to his (cold and congealed) dinner, disappeared upstairs and fell asleep.

It was just too tempting …

WhatKindOfCake · 20/04/2026 18:38

Elanol · 20/04/2026 17:56

I had a neighbour who slammed his front door. I jumped out of my skin every time. They are heavy fire doors and really loud. Sometimes the vibration ran across my floor.

I made numerous complaints to the management company but he didn't give a shit. Lockdown was awful, he was home all day and never went back to work. One day after 22 (yes 22 not a typo) slams I lost my shit.

I bought a huge pair of trainers in a charity shop so they looked worn. I put them outside my door. Suddenly he could close the door properly. Funny that....

It's a shame it took a threat of violence from the man who fits into those huge trainers to behave decently.

That's seriously the worse thing you've ever done? Left a big pair of trainers outside your door? You must be a saint!

Beaniebobbins · 20/04/2026 18:39

iamfedupwiththis · 20/04/2026 17:28

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

Very much depends on where you had the poo! 😂

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.

HeadDeskHeadDesk · 20/04/2026 18:39

purpleheartsandroses · 20/04/2026 17:23

If I told you, I'd have to kill you 😜

You beat me to it. 😂

Seriously though, if I told you I really would have to kill you.

dizzydizzydizzy · 20/04/2026 18:41

SabrinaThwaite · 20/04/2026 18:37

He rang to say he was just leaving work and would be home in half an hour. So I cooked dinner to be ready when he arrived.

Except he didn’t arrive. He rolled in 5 hours late because his colleagues (and his lift) went to the pub. Pre mobile phones but he didn’t use the pub pay phone either. He staggered in pissed as a fart without saying a word, put his shoes on the kitchen counter next to his (cold and congealed) dinner, disappeared upstairs and fell asleep.

It was just too tempting …

Genius! Well done!

LapisBlue · 20/04/2026 18:42

WellConfusedandDazed · 20/04/2026 18:33

Meh. Were you cheating? If not I don’t think this is bad at all.

No, I was single on both occasions! When I think about my traumatised divorced life now it's as if I was a different person.

PS,: Neil was the best one.

LapisBlue · 20/04/2026 18:43

SabrinaThwaite · 20/04/2026 18:37

He rang to say he was just leaving work and would be home in half an hour. So I cooked dinner to be ready when he arrived.

Except he didn’t arrive. He rolled in 5 hours late because his colleagues (and his lift) went to the pub. Pre mobile phones but he didn’t use the pub pay phone either. He staggered in pissed as a fart without saying a word, put his shoes on the kitchen counter next to his (cold and congealed) dinner, disappeared upstairs and fell asleep.

It was just too tempting …

What did he say? How did he react?!

devonsevon11 · 20/04/2026 18:43

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’ve been thinking this exact same thing.

I had next to no moral guidance, or guidance of any kind growing up.

I lied a lot when I was a child, probably right up to my 20s. Not really about anything major, but I certainly wasn’t a truthful person.

It’s taken a long time but I can now see that it’s just because of how I was brought up. My mum has always worked and is well spoken and well presented, but she lies. A lot. She also shoplifts small items despite not being short of money. She is also just very distrustful of people and mean spirited. No empathy. And I obviously just modeled that behaviour.

I really cringe when I think about it now. And I feel very let down that this is the behaviour she modelled for me.

I don’t know if there is one particular bad thing I’ve done. I think probably just general shit stirring and causing issues due to deep rooted insecurity. I’ve caused a lot of fights and rifts throughout my family and friends by doing this and I regret it bitterly.

Again, it stems from my mum. She always made me feel inadequate. I was deeply insecure and jealous of just about everyone. So I did what I could to try to cement my place. Which, of course, never works.

Thehandinthecookiejar · 20/04/2026 18:43

also washed his cup in the toilet.

He did what now?

MyKindHiker · 20/04/2026 18:45

@shehardlysleeps I would say your 'bad thing' - ranting on an anonymous forum is really not that bad. It was mainly bad for you, I don't imagine your coworker thinks about it any more.

I'm not going to get into my bad things because they are bad-bad. Worse than anything I've read on here. Starting when I was a kid and was very unkind to some other kids because I was hurt and insecure. Unfortunately some of these bad behaviors have continued into adulthood.

I try and be nice and kind but sometimes just can't help myself and some very vindictive behaviors come out. Most people think I'm a really lovely person as I hide it well.

Elanol · 20/04/2026 18:45

PullingOutHair123 · 20/04/2026 17:58

I think that's a very intelligent thing to have done! Although shouldn't have been necessary...

Definitely not a worse!

I found the idea on Reddit when searching for sound proofing solutions. Best fiver I've ever spent. 😂

Calebcrush · 20/04/2026 18:46

paradisecircus · 20/04/2026 17:52

I've driven away after reversing into someone's car in a car park, knowing I'd damaged their car. I did get caught on cctv, so there was karma for them.

I wonder if it was my car .. this happened to me a few weeks ago 🤨

Erin1975 · 20/04/2026 18:46

Have you been to the cinema to see The Drama?

I watched it last week and this question is the main plotline of the film.

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