So after seeing the Dummest (lol) thing you ever did thread and watching the Goonies last night, I got to thinking:

What the most disgusting or disturbing thing you've ever done?

I'll start:

Years ago in college I got incredibly shit-faced one night. I don't remember how I made it home but I did make it home in one piece. The next morning, I wake up in the bathroom in front of my toilet with vomit all over the toilet and walls, my pants off, and shit all over the floor of the bathroom. What was really upsetting was that there was vomit/shit on some of my DnD books that I had been reading on the pot (including the $40 Epic Level Handbook).

What I'm thinking happened is that I stumbled home and was going to take a shower since taking a shower usually makes me feel better when drunk. Midway through getting undressed I decide I need to vomit so I make it to the toilet and must have passed out while vomiting or something. While passed out I must have also crapped and then rolled over a times and that's how it got everywhere.

So I spent the next few days cleaning and bleaching the Hell out of that bathroom making sure no poo was to be found. Luckily that was in the apartment where I had my own bathroom so I didn't have to share that embarrassment with the roommates.

--

And now for the disgusting part of the story: I sold those Dungeons and Dragons books to Half Price Books a few days later.

Back in grade 2, I asked to be excused to go to the bathroom. I went to the bathroom and as I was walking towards one of the stalls, I slipped and fell. As I got up, my hand touched the stuff that I slipped on. It turns out that some douchebag decided to have diarrhea all over the floor. I ditched school and ran all the way home with my clothes covered in liquid shit.
I'm not sure I should be sharing this, but what the hell.

Something really bad is gonna have to top that one.

Yes, think about that the next time you buy anything used.

Alright here goes....I have the tendency to drink water before I sleep....which leads to me wanting to pee in the middle of the night. Problem is I live on the 3rd fl and the stairs are old so when I walk down to the 2nd fl bathroom I make so much noise ( even when I not tryin to) that it wakes up the house. So I decided to bring an empty water bottle and pee in that and in the morning go to bathroom and pour it out. Sounds simple right?

Well...after about 5 months, I forgot about one time and left it open.......for 4 days. And I had it under the bed. So my cousin comes over and we're playing some call of duty when he decides to sit on bed.....and kicks the bottle by accident......pee all over the floor.....think of the explanation I had to come up with.

I kept doing this for another 3 months and then my same cousin found the bottle and doesnt tell me....he pours it in a cup and gives it to my 12 year old cousin that's it apple juice... you can tell wut happens next....and problem is it was on my mom's bed....I'm surprised i didnt get kicked out the house for that.

I worked at a seafood restaurant back in 2005, I was the cook getting paid chicken feed. I was 19 at the time, fairly young and arrogant. We had this customer that would give me the hardest time during midnight every Saturday (one of the busier times of the week). Every week he would always complain about his Jumbo shrimp combo, saying it was cooked too hard or too light, etc. I would get yelled at and the customer would always get a second dinner on the house. So one Saturday I finally confronted him and made sure I knew how he wanted his food cooked EXACTLY, but he had the balls to say that it was too salty. And like every week I had to make him another dinner, but this time I added my own little recipe. I pissed in his shrimp batter.
I laughed every time I saw him after that for the next few weeks I had that job.

Bottom line, please never PISS off any one that's handling your food.

LOL, it would be even more funny if that was the first time the guy didn't complain about his dinner.

BTW that truly was a disturbing story OP