My parents are very morally driven people, so I am not much of a partier, but I know that my oldest brother drinks a lot, and one time when I was 13(he was 18 then) he let me try Jack Daniels whiskey. It hurt my throat. And then another time I was with my uncle's and we got back from a trail ride and I was uber thristy, so I just took a drink of the nearest cup, and it was beer.
I don't plan on ever developing a habit of drinking. I have seen what alcohol does to people, not to mention it tastes like pee, so I think I have had my fair share.
I am 15 by the way.