When she gives you head and its so damn good it feels like your dick is in a washmachine.
Hunter: Yoo Alex I got some bomb ass head last night.
Alex: uh uh, shit bro how good was it?
Hunter: Bro she was on spin cycle i got some wash machine head
A blow job; to give oral sex to a man. This term was a popular 1980's slang. It is seing a resurgance along with other 80's terms such as dork and joystick.
I caught a headwash from this girl I met at the bar the other night.