Here's mine:
I came home one night at about 5am absolutely blind drunk. I'd walked home and by this point was absolutely bursting for a wee. I staggered to the loo and being so drunk I forgot to pull down my jeans and knickers before sitting on the seat. I just sat there and pissed through them. I was beyond care I think at that point, I remember thinking it was the funniest thing in the world. That was before being sick and passing out 
What's your stupidest moment while drunk?