Related to "lasers" and "shoop da whoops", a "Royal Rainbow" is what happens when a taco is forced into the mouth of the person charging their laser. The caster instead releases a Royal rainbow, and possibly the swallowing of one's laser, and can end in the shooper asploding.
*Jered fails HARD*
Phil: I'MA FIRIN' MAH LAZOR!
*Jered shoves taco in Phil's mouth*
*Phil releases Royal Rainbow*
Phil: OPS I SWALLOWED MAH LAZOR!
Phil: I'MA FIRIN' MAH LAZOR!
*Jered shoves taco in Phil's mouth*
*Phil releases Royal Rainbow*
Phil: OPS I SWALLOWED MAH LAZOR!
by Corey_Faure April 30, 2010
To throw up profusely, normally in the figurative sense. Usually in response to something that is too cute or just outrageous for words. Done in the fashion of the King of Cosmos from Katamari Damacy in which the person emits a large rainbow from the mouth that has pink instead of indigo for some reason.
by Baby S. Doll July 27, 2007
The Royal Rainbow is when a shot of Crown Royal makes you cringe and the skittles make you come back for more!
by RR Royal Rainbow June 1, 2011