Hey now, if we're gonna be in a "flame war" (albeit a tame, joking one :P ) You're gonna have to play fair. Posts from this site only. :P
In all seriousness though, most of the time alcohol is what causes people to lose their inhibitions. Weed doesn't, for the most part (because there are always exceptions). At least personally-speaking; with alcohol I want to wander off and do something ridiculous (I believe I jumped off a friend's roof into his pool once when drunk, although to be fair this roof in particular was quite close to the ground), whereas when I'm high all I want to do is sit on the couch and eat.
By the way, weed speeds up one's metabolism, which is what causes "the munchies". I bet if someone smoked weed a lot and didn't eat when high, it'd be a killer way to lose weight. :P