Not something to be proud of, but quite a lot actually. Had a bad crash once and toned it down after that though. Riding home after a couple beers does still happen occasionally. Good thing is that I do most of my social drinking in the same bar where I'm good friends with the owners/barman, so they let me leave my bike in the bar if I've had one too many.
Speaking of riding drunk: I've had not so much trouble going in straight line when riding noticeably inebriated, as staying up when stopping. When coming to a stop, the impaired vestibular apparatus has trouble to adapt quickly enough to not being on the move anymore, which has caused me to fall over backwards just after stopping and putting my foot down.