Top Definition
When you get multiple amount of girls, make them put on different colors of lipstick, and have them give you a blowjob.
Roger asked Molly, Tiffany, and Britney for a Rainblow Job.
by MICHAELBENHAM December 22, 2010
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The word Disney uses for "blowjob."
Prince Charming: I sure could use a blowjob.

CANCELED

Prince Charming: I sure could use a rainblow job.

ACCEPTABLE
by Your_Favorite_Pseudonym September 21, 2011
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A blow job involving sucking a dick with a full bag of m&ms in your mouth.
She gave me a rainblow job.
by Nochillgreg August 08, 2016
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