Rainbow Muffler 

Having several sexually transmitted diseases at the same time.

Lana has a blue waffle, a purple sock, the clap, the drip, and crabs at the same time. So Lana has a Rainbow Muffler.

Rainbow Muffler by RainbowMufflerz April 25, 2011

Fuck Rainbow Six Siege 

Jacob: "Let's kill this asshole for not helping the team"
Rainbow Six Siege: "7 day suspension from PvP"

Jacob said "Fuck Rainbow Six Siege" out of anger for the bullshit the game has caused.

Fuck Rainbow Six Siege by yourloyalpal July 15, 2017

Rainbow Game 

Where at least 1 guy and multiple girls wearing diffrent colored lipstick, kiss a guys dick so that he has a rainbow on his dick. It can be played competively to see who can get the most colors of lipstick.

Dude I totally played the rainbow game with 5 chicks last night!

Rainbow Game by Oxendoobie June 21, 2006

Rainbow Six 3 

The best game on Xbox Live as of the date this was written. (Summer 2004) It currently has a sequel/expansion known as "Black Arrow," which is exclusively on the Xbox. Though the single-player campaign on both games are a little "imperfected", the multiplayer is amazing. Sadly, many people are going to ditch Rainbow Six 3 for the newer version of Black Arrow. (stated above) The lean glitch has been fixed, and the .50 cal rifle has been removed and replaced by a Dragunov, Black Arrow has something worse than the two problems combined; spawn-killing. 79% and plus players camp at the other team's spawning point and snipe them in the head before the have a chance to even move. Ubisoft, the game's developer, is working to fix this problem. A good solution is to put a 2-second invincibility counter on the spawned player. so that he can actually kill the spawn-killer first. All in all, Black Arrow introduces new gameplay modes and maps (including the downloadable ones from the original Rainbow Six 3) which is not to be overlooked.

Rainbow Six 3 is a great tactical shooter. All players must bow before it!

Rainbow Six 3 by Ryro32 August 9, 2004

rainbow party 

A party where maultiple girls each put on a different shade of lipstick, and suck off a guy. Hence, the guy will have a "rainbow" colored dick.

"Yo Sarah, what color are you wearing to the rainbow party?"
"What's a rainbow party?"
Well, Chrissy, if Sarah wore red lipstick, and I wore purple, your dick would be purple and red."
"Oh. Oh God."

rainbow party by xblackmamba06 May 23, 2004

dirty rainbow 

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

My friend passed out on the couch so I gave him a dirty rainbow

dirty rainbow by Big Man February 19, 2004

rainbow kiss 

Performing 69 while a woman is on her period. The man ejaculates in the woman's mouth and the two kiss, the menstrual blood and semen mixing to form a beautiful rainbow of colour.

We shared the most beautiful rainbow kiss last night... This girl is really special.

rainbow kiss by Cunny January 24, 2005