In The Rainbow 

When you and your girl have a threesome with another girl. Then your girl has way more fun than you are with the other girl. Then dumps you for that girl

When Billy laughs at Tom when he got dumped by Becky with his side hoe.
"Ha Ha you've been left In The Rainbow" he laughs out.

In The Rainbow by Tent_The_Bean June 7, 2017

all the colors in the rainbow 

Used as a term to describe almost everything or a lot of different selections. Can be interchanged with all the letters in the alphabet, however both are not always connected to colors or letters.

"Come on down to Dave's rentals, we got pickups, sedans, SUVs, all the colors in the rainbow."

all the colors in the rainbow by epicman4192 February 17, 2021

Rainbow in the Dark 

1) No sign of the morning coming
2) No sight of the day
3) Being left on your own

Hector: Yo man, the lightning always done bring me down.
Dio: You're a rainbow in the dark.

Rainbow in the Dark by SpookyTree April 14, 2004

A rainbow in the underwear 

A rainbow in the underwear occurs when someone (presumably a man) has made the greatest possible variety of excretions in his underpants. This would consist of a brown stain, a yellow stain, and an off-white stain.

Jean Pierre Garnier never wipes his ass, so he has skid marks; he has also been known to have wetdreams almost nightly. A few months ago thirty people came to his house to scream at him. He pissed himself and a made a rainbow in his underwear.

A rainbow in the underwear by DLa April 6, 2005

rainbow in the closet

someone who is gay and won't admit it.

branden is a rainbow in the closet

rainbow in the closet by dj squig April 30, 2006

rainbow in the dark 

1. The sexual act where the girl ties the guy to the bed, blind folds him, turns the lights off and tells him he is in for some real kinky sex. She then opens the closet and lets out her gay best friend who goes to work on the guy; Blow jobs & anal. The dude gets off 'cause he has no idea what happened. This is most often initiated by either the worst girlfriend ever, or the best friend any gay dude could ever have.

2. Some song by a hobbit from New Hampshire

"Wow, Edgar's girl friend must really despise him."

"Why?"

"Because she gave him a Rainbow in the Dark last week and then told him about it! He's been in the fetal position ever since."

"But he loves Dio."

"No! Read definition #1!"

"Holy crap, I dated that same chick last Summer! I just thought she was kinky... I suddenly feel ill."

rainbow in the dark by izod13 January 4, 2009

Rainbow in the Dark 

A homosexual that won't come out of the closet

Cody is a Rainbow in the Dark. I know it

Rainbow in the Dark by DizzyLizzy November 21, 2006