Oh, geez, where to begin...
There was the one and only time I've ever blacked out - I was staying in my friends' dorm room. I drank most of a bottle of rum, straight. I staggered down the hall to our other friends' room, but they wouldn't let me in, and I fell and hit my head on a brick being used to prop their door open. My friends that I was staying with dragged me back to their room, where I puked everywhere. So then they dragged me into the shower and just threw me in with my clothes on. I woke up the next day with the worst hangover ever, and I had to work too.
At a club one night, I bought these girls a couple rounds of drinks. One of them was really drunk, and she danced, erm, very provocatively with me. It was awesome at the time (as far as I can remember, she was pretty hot), but thinking back on it now makes me pretty ashamed. I wish I could talk to her and just apologize, but I have no clue who she is or how to contact her.
A few times where I really shouldn't have drove home.
A few times when I puked or otherwise made a mess of my friend's place and just bailed early before anybody else woke up.
The summer after high school, there was a big party I went to. This girl was there that I had a huge crush on, she was really beautiful and popular, but really nice, too - she went out with me to a formal dance earlier in the year. So I took her aside and confessed to her that I was in love with her. But I was half-passing out at the same time, so she was just kind of like "Uh, okayyy...." and walked off.
Oh, and one time while drinking at my sister's place, I had to go #2 and sat down on her toilet so hard that it cracked apart. Luckily her landlord replaced it, no problem. Still embarrasing, though.
I think that pretty much sums it up. These days I don't drink nearly as much as I did, so the stupid shit is pretty much at an end, thankfully.