And you can register for the draft, get a tattoo, buy cigarettes as well.
Just remember not to believe the bull shit of "Your vote counts". Remember when Bush and Gore were having the re-count of the state votes. I think it was Oregon that no matter which candidate it went to it wouldn't help him the election.
Now, with my disdain for being 19 and having depressed you, allow me to wish you a happy birthday.