When a group of girls wear different colored lipstick and suck a guys dick, leaving different colored rings on the dick. Creating a rainbow effect :)
Me and 4 chicks had rainbow sex last night! RED YELLOW GREEN AND BLUE!
de Shwanky240 13 Iulie 2009
having sex with a girl on her rag
Hey I'm up for some rainbow sex. I don't mind.
de Sun 10 Mai 2006