Re: Embarassing things you've witnessed at a bar?
I was out at an Irish-themed pub last st. patricks day with a few friends.
One awesome little Asian dude who we had just met that night was on his 3rd pint of Guiness (after consuming quite a lot of other drinks beforehand).
He gets nearly to the bottom of the pint, starts to look a little dizzy and pale, then suddenly yet somehow quite skillfully regurgitates/spews a controlled stream of Guiness back into his glass, he filled it right back to the brim and it even had foam on top. I was the only person at our table who actually saw him do it. He giggled, winked at me, then started drinking it from the top again.