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.
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!!!!!!!!!!!!
"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.