Dirty Rainbow

When you shit across the bottom of someone's windshield, so that when they turn on their windshield wipers, a glorious rainbow of shit is painted behind the wipers.

1. The act of puking, pissing, shitting, and cumming all over a person as an act of humiliation, thus creating a disgusting rainbow of different colored substances.

2. When one has so poor of a fashion sense that you can only describe what they're wearing as a "dirty rainbow."

The act of sticking you whole hand up someones asshole, then pulling it out and smearing it on them, openhanded, in a semi-circle pattern to resemble a rainbow. Similar to a dirty sanchez, but this is much bigger and can be done on other parts of the body.

When you aim your ass up in the air & shoot diarreah onto someones face

when you are standing above a girl who is lying down and you blow ur load in her face while shitting on her tummy

When you go shit in his mouth, he goes shit in yours, and you French kiss.

Also, when a guy goes down on a girl while she is on her period, and Gets all the blood in his mouth. And a girl has blood/cum in their mouth, they kiss each other.

When a man ejaculates into his partner's asshole, then sucks it out, and proceeds to make-out with their partner.