Tasting The Rainbow 

When one peels back their foreskin, and put skittles inside of it before ejaculating. Preferably three, and has someone suck them out and states "Taste the Rainbow"

"Ah yeah baby, suck it good, I bet you love tasting the rainbow"

Tasting The Rainbow by Djwolfmater February 15, 2020

I want to cum inside Rainbow Dash

A common phrase on sites such as Derpibooru, e621, Rainbooru and Rule 34 that means wanting to impregnate the character Rainbow Dash from the series My Little Pony Friendship Is Magic.

David: dude, I want to cum inside Rainbow Dash
Chad: fucking loser lmao

I want to cum inside Rainbow Dash by SonicTheDankHog December 28, 2022

Double Rainbow

When two bisexual people date.

That double rainbow will never work out, they are both too slutty.

Double Rainbow by CurlyGirlie June 13, 2015

dark rainbow 

A person who is a) confused b) torn between two soical groups or c) likes to confuse people

Dude that guys is a total dark rainbow

dark rainbow by you dont know me November 6, 2004

Taste The Rainbow

While many young women of our time have become attracted to men that happen to be gay, for pleasure, the men won't tell them that.
Therefore, when tasting the rainbow, a woman would be giving oral sex to a non-straight man.

Carl: Betsy got some action with Pablo last night.
Dick: But Isn't Pablo Gay?
Carl: Yep, guess she tasted his rainbow.

Taste The Rainbow by Jackie & Emilie August 3, 2004

Double Rainbow

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.

Double Rainbow by cockmaster346 February 4, 2010

Irish Rainbow Chug 

The act of eating all the cereal pieces out of your lucky charms and then downing all the marshmellows at once.

Im eating lucky charms. Im going for an Irish Rainbow Chug.

Irish Rainbow Chug by tadpoleguy September 1, 2010