One was at my cousins birthday party. It was in a pool. I swam up and play drowned a kid I thought was my cousin. I wrestled him and then realized I was mistaken. I was only like 9 at the time but still remember how bad it was for me lol.
The other time I slapped a girls butt in Walmart thinking it was my girlfriend at the time. The random girl slapped me so hard, in front of like 40 people lol. Damn.
Just the other day, I was leaving a local music shop. The parking lot isn't paved, it's just dirt, and it has a few random planters in between the spaces. There's only like two, and I forgot I was parked in front of one. I just go straight ahead out of my space, and hit the planter hard. I go up on it, I'm already halfway there, so I just drive all the way over it. I pull out, everyone is just staring at me, haha.
That wasn't too bad though. I can't think of anything really horrible that happened, thankfully.
Probably back in the 5th grade when I tried to make my crush laugh while she was in a bad mood, then she said I wasn't funny.
Edit: More of an awkward moment but I was pretty embarrassed. A cute girl was walking past me while I was resting after my set at the gym, we both locked eyes quickly, she smiled, I quickly turned my head because I'm a little *****, I had no idea she was about to stare at me but I felt pretty bad afterwards.
Me and my ex ducked into the "family restroom" at the mall. Apparently someone told security that we were in there, cause half an hour later people were all "omg this is for families" and made us get out.
I played it off all cool like though. As I was walking out I shut the door behind me, pat the guy on the shoulder and said, "Give her a minute."