Dude, Where's My Car? (2000)

Jesse and Chester are two potheads who got so wasted the night before, they don't remember a thing! All they know is Jesse's car is gone and they encounter a transsexual stripper who wants his/her suitcase of stolen money, a group of alien-seeking nerds and an angry street gang. And their girlfriends Wilma and Wanda are super-pissed that they trashed their house. And they must find a "continum transfuctioner", a mystical device that could either save or destroy the world. And a group of jumpsuit-wearing, sexy-as-hell, aliens posing as humans want it....