If you're saying that to try to one-up the Girl from Brazil, then I suppose you know, this means war.
If you're using that as an excuse to drink, well... *sigh* It's more eloquent than most and everybody does it anyway.
To tell you the truth I don't favour laws that assume you'll be guilty of irresponsible behaviour just because you're a certain age. I thought we lived in a country where individuals were innocent until proven guilty, not guilty until proven "old enough" - They should take alcohol privileges away from people who use it irresponsibly, no matter their age.