by Buescher January 7, 2009

A group run by the charity Keshet that allows developmentally challenged students to sing together in a vibrant fashion, donning the colors of the rainbow in the process. It gives a creative outlet to those who otherwise would have none.
The Rainbow Choir may be full of retarded children, but they sing like a pack of rambunctious pterodactyls!
by MastorDebator March 17, 2011

Usually a homosexual who follows the "hipster ways." Characterized by shopping at thrifty stores, Urban Outfitters, American Apparel AND wearing colorful or rainbow-embellished clothing.
Hahaha look that guy! He must be gay! With that hipster get-up and that rainbow beanie, he must be a rainbow hipster.
by Lamaboy April 3, 2011

During sex, one partner fills his or her mouth with lucky charms, places a funnel in the other partner's asshole, proceeds to pour milk into the funnel, and drinks the milk out of the asshole. This results in an asshole milk-lucky charm concoction that is magically delicious and sexually arousing.
Man: You want to do an end of the rainbow?
Woman: Nah, the funnel doesn't fit anymore, it's too loose.
Woman: Nah, the funnel doesn't fit anymore, it's too loose.
by 2Interstellar April 17, 2015

Girl 1: You can't go out with Tommy, he's a total rainbow rider.
Girl 2: What?!
Girl 1: Yeah, I heard he bent that emo kid, Jake, over the concession stand last week.
Girl 2: What?!
Girl 1: Yeah, I heard he bent that emo kid, Jake, over the concession stand last week.
by Noninimicus February 18, 2013

by Larry The Robot Maker August 29, 2019

by Georgeos August 9, 2009
