A term expressing something of pure, unrivaled awesome. Used commonly when awesome or spectacular are simply insufficient
"Did you see that double backflip?
Totally Double Rainbow"

"hey, how was your weekend at the playboy mansion?
Double OMFG Rainbow"

"how's the scene at the party?
Double Rainbow
On my way..."
by wolff46 July 11, 2010
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An innuendo for multiple orgasm. As made famous by youtube actress Ceciley's verbatim, passionate interpretation of Hungrybear9562's viral video "Double Rainbow" In which she sounds like she is having multiple orgasms.
He showed me a double rainbow last night.
by cherprin July 16, 2010
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Pure unequivocal elation at seeing two of anything, particularly rainbows. Originated from a youtube video (search for Yosemitebear Mountain Giant Double Rainbow) where a man is so incredibly taken aback by seeing two, almost three rainbows!

He then proceeds to cry from happiness, as you too would do if you were there.
I can't believe I just got a raise AND a blumpkin!!!!!!! IT'S INCREDIBLE!!!!!! IT'S LIKE A DOUBLE RAINBOW!!!!!!!!!!!!
by MadP July 23, 2010
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When two bisexual people date.
That double rainbow will never work out, they are both too slutty.
by CurlyGirlie June 11, 2015
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Double rainbow - when two guys cum over another guys face at the same time, hence crossing spunk streams - meaning to be double rainbowed.
"I really want a double rainbow tonight"

"Fancy a double rainbow?"
I really want to double rainbow him, are you up for it?"
You should have seen the double rainbow I got last night.
That was the best double rainbow I've ever had.
by cockmaster346 February 4, 2010
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When a male jacks off two other males, especially if they have big dicks.
Last night, I saw a double rainbow!
Dude, you weren't part of it?
Nah, I sat back and just enjoyed it.
by Eyx September 30, 2016
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