v. n. Blasting Trance/House music and flicking on and off the lights while your roommate or friend is taking a shower. Usually accompanied by dancing and yelling the words "Shower Rave" in a playful manner.
Guy in Shower: WTF?!
Roommates: BOOM! SHOWER RAVE!!!!
Guy in Shower: Ohhhh you guys..
(Guy in Shower starts dancing along)