Rainbow kitten surprise 

While having sex with your girl from behind you secretly sprinkle the marshmallows from Lucky charms into her ass. When she finds them later you yell "surprise!"

Yo I totally got Danielle with a rainbow kitten surprise last night!

Rainbow kitten surprise by shanman72 April 18, 2019

Rainbow Six Siege 

Tom Clancy's Rainbow Six Siege is a first-person shooter video game developed by Ubisoft Montreal and published by Ubisoft.

Gamer: Fucking downgrades, Ubisoft fucked up AGAIN! What happened to the Rainbow Six Siege beta trailer graphics?

Me: Just shut the fuck up and play the game.

Rainbow Six Siege by DankShr00ms June 15, 2016

Rainbow Unicorn 

The term used for the act of giving a blow job with a mouthful of skittles.

If you give me a rainbow unicorn you can taste the rainbow, honey.

My wife always gives me a rainbow unicorn before I go to work. She loves skittles.

Rainbow Unicorn by CharlieChaos January 31, 2020

rainbow wheel of death 

that damned icon that appears whenever you screw up in OSX and you feel like smashing your computer.

George encountered the rainbow wheel of death when he tried to look at porn and it gave him a virus.

rainbow wheel of death by andy mishra January 4, 2007

It's all rainbow 

A popular alternative for saying everything is okay. Equivalent to "no worries".
"Rainbow" is often used as a substitute for people with iOS5 who do not have access to the rainbow emoji.

Person 1: "Aye that pikunz is chattin shit about u".
Person 2: "It's all rainbow fam"

It's all rainbow by teamSWAG June 19, 2014

Rainbow Sandals 

The Factory itself is a cultural corner stone but what's inside is more important. Easily the best footwear you will come across in your life. Each sandal is handmade in San Clamente and all have their own unique quirks. The factory/ store is based in San Clamente CA and supplies all the shoes to hardcore surfers. You'll be apart of an elite few who own these uber comfortable, but as yet relativly undiscovered funky sandals. I would recommend looking them up on a search engine as they can last you a lifetime. Visit San Clamente and pick up the last pieces of foam/rubber/leather/hemp your feet will ever touch. Badass shoes.

"you're wearing Rainbow Sandals?"
"yeah dude picked them up last week"
"Well they'll last you eons"
"sweet"
"killer"

Rainbow Sandals by Natanku August 7, 2006

Rainbow Bunchie 

The Rainbow Bunchie, also known as the Final boss of the Internet, is a llama-like creature that is multicoloured. In essence it is an animation of the Rainbow Bunchie with a light-hearted tune in the background. To 'defeat' him you must watch the video without laughing.

It's teh final boss of teh interwebz!

*Laughs uncontrollably*

The Rainbow Bunchie defeated me!

Rainbow Bunchie by Bunchiezz August 29, 2010