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

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

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

by Larry The Robot Maker August 29, 2019

by Georgeos August 9, 2009

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
