Go shit a rainbow egg 

Something Sergeant Cid should do.

Person 1: HEY SERGEANT CID, GO SHIT A RAINBOW EGG.
Sergeant Cid: srtop it.

Go shit a rainbow egg by Wylin May 12, 2009

Texting Rainbow

The act of waving your cell phone in the air, in the shape of an arc, or rainbow, to get signal in a deadzone. Especially when sending a text message, while the screen says "sending" but the phone has no signal.

"That guy is doing a texting rainbow. Is there any service here?"

Texting Rainbow by spazzmle March 1, 2009

Twerk Rainbow

When an assortment of different colored booties (aka different raced women) simultaneously twerk around one's body in an arch much like the shape of a rainbow. As opposed to the traditional 7 colors of the rainbow, you would generally see white, black, brown, yellow, and occasionally red in this palette of shaking badonkadonk.

"Hey man did you see Justin getting some fine booty at the club last night?"
"Yeah! The dude had a full twerk rainbow around him when they played *insert latest ign'ant rap song*!"

Twerk Rainbow by ol'dirtybastard September 4, 2013

truck stop rainbow 

When enjoying the services of a prostitute who frequents truck stops, the customer withdraws his penis just before climax and ejaculates over the prostitute in a broad, arcing pattern.

Rita was impressed by Clem's impromptu truck stop rainbow, but not enough to give him a discount.

truck stop rainbow by SmokeysOnMahTail July 10, 2010

cupertino rainbow 

Cupertino Rainbow is a term that originated in the porn industry,used to describe the sexual practice of smearing dyed or colored fecal matter on the back of one's partner by application of the penis used as a "paintbrush" following anal sex. The coloring of the fecal matter is achieved by the insertion of small colored wax pellets or "rainbow drops" into the rectum prior to initiating the sex act. Once the pellets melt the colored fecal matter can be applied via fingers or penis. Some enthusiasts or "rainbow chasers" photograph the results of the act for display as art. This act can be seen performed in the 2006 sex tape "Some Whore Under the Rainbow

"she was pretty open minded , but would never allow me to try the cupertino rainbow with her"

cupertino rainbow by DMZ1978 May 24, 2008

Morningwood Rainbow 

The Act of Waking Up With Morningwood,Taking A Piss, But Having To Stand Far Back From The Toilet So You Don't Spill, And Your Piss Stream Looks Like A Rainbow

Dude I Woke Up With Morningwood, and My Dick Was So Hard I Had To Pull A Morningwood Rainbow.

Morningwood Rainbow by KaKeeZDiaBlo186 July 22, 2009

Royal Rainbow 

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.

My girlfriend is so cute, she makes me want to Royal Rainbow whenever I see her. It must be love.

Royal Rainbow by Baby S. Doll January 1, 2009