Dude, Where's My Car?
I watched this last night knowing just about nothing about it in advance except that it was what the director of Harold & Kumar Go to White Castle did before Harold & Kumar.
It's a lot like The Hangover, but instead of increasingly outlandish situations there are increasingly preposterous situations. Something like a Hangover / Earth Girls Are Easy cross.
If you haven't seen any of those, a quick plot summary. Jesse and Chester are potheads who wake up after a party and have no memory of it. They are on a quest to give their girlfriends the anniversary gifts they bought for them, but the gifts are in the car and they can't remember where it is. Along the way they meet a pot smoking dog, a French ostrich farmer, three groups all trying to get some sort of "continuum transfunctioner" from them, a transvetite from whom they have stolen a lot of money, and several smaller characters.
The humor is stupid, and just barely PG-13, but the movie is quick and warm.
Three alien "hot chicks" offering "erotic pleasure" out of five.
Final thought: the lost car is a Renault 5 with one mismatched door