Rock Star Car Wash
After fucking a chick you don't take a shower. Then you go out and fuck another chick with the first woman's juices getting washed off your cock by her pussy.
Dude! I fucked Jenny this morning, left for work without showing and I just banged that slut Monica she gave my dick a rock star car wash.
Star Wash
A "car wash" for spacecraft, typically on a commercial spacestation.
I have to go to the star wash soon, I dirtied my ship in a crash.