Red Power Ranger
(Noun) The name given to the female participant in a fourseome who is on her period.

(Verb) - To RPR someone is to : - Call up a girl on her period and put her in a room full of three guys and have sex with her till everyone has had an orgasm either on her or in her.
Aymmar - "Dude how was sex with Jessica last night?"
Chris - "It sucked, she was a total Red Power Ranger"
Frankie - "Oh man, that sucks."
Chris - "I knew she was on her period she was grumpy as a baboon with a cist on it's ass"