beef rainbow 

When a mans dick is resting on a woman's vagina and the vaginal lips overlay the penis' shaft.

Don't go through my photos because you'll see some major beef rainbow pics, man.

beef rainbow by TBanger69 January 18, 2017

Rainbow Ride 

When a number of women put on a different shade of lipstick each and all take turns blowing a guy, mixing the colors creating a "rainbow" like appearance on the man's crouch, therefore a "Rainbow Ride".

Last night Jenn, Colleen, and Stina put put on blue, yellow, and red lipstick and gave me a rainbow ride.

Rainbow Ride by Lotto23 January 31, 2005

rainbow bruise 

a bruise that consists of a bajillion (about 5 or 6) colors. a person can get these bruises most likely in the bicep area while playing a contact sport...especially the sport of lacrosse

After playing lacrosse for the whole season my rainbow bruise is massive, and has about 6 colors in it

rainbow bruise by Aubrey Burt July 17, 2006

rainbow pash 

Cunnilingus while the woman is on her period.
This is followed by an open mouth kiss which is ideally bloody.

Adam: I think i might be a vampire!
John: Why would you think that?
Adam: Jill requested I perform a rainbow pash on her last night and i quite enjoyed it.
Adam: Stop biting my neck!

rainbow pash by van_tango January 18, 2008

Rainbow Fart

Rainbow Farts happen when you end up eating too much colorful food like skittles and M&Ms to the point where you shit out farts that are rainbows.

*Jacob munches on some M&Ms*
Jacob: *FARTS*
Jacob: OMG OMG OMG I JUST HAD A RAINBOW FART

Rainbow Fart by Khagreytits September 7, 2014

Double Rainbow All the Way 

A reference to being very, very high.

Based on the internet video where a guy makes it abundantly obvious that he is extremely stoned through his astonishment of viewing a "double rainbow all the way".

Search youtube: Yosemitebear Mountain Giant Double Rainbow 1-8-10

Dude1: "Dude, how high were you?"
Dude2: "Dude, double rainbow all the way"

Double Rainbow All the Way by Dano5.0 July 10, 2010

double rainbow

phrase commonly used during peak sexual arousal.

Jenny: "Ooo..yes...ooh...uuh..DOUBLE RAINBOWWW!"

double rainbow by jfigdig July 8, 2010