rainbow it 

to arch something so you are able to catch it

"Hey Mike, rainbow it that so I can get it in my mouth!"

rainbow it by APbio December 9, 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

every unicorn will find its rainbow 

A well known phrase that essentially means the same thing as "every giraffe will find their scarf", and "every triceratops will find their berry bush".

Ted: Well you know what they say, Jim. Every unicorn will find its rainbow.
Jim: What the fuck does that even mean, Jim?

every unicorn will find its rainbow by UnicornsFindingRainbows July 5, 2020

rainbowlt

When a rainbow is intersected by a lightning bolt.

OMFG~did you see that Amazing rainbowlt? It was beyond words & So Rare!

rainbowlt by Starchylde September 18, 2015

Rainbowically

To colorize items, in the colors of the rainbow.

My grocery list has been colorized rainbowically.

Rainbowically by Poppy11 May 23, 2018

Double Rainbowing 

Vomiting while having a case of diarrhea.

"Oh my god, last night I was so sick I double rainbowed."

"Double Rainbowing is the worst!"

Double Rainbowing by travitz west October 2, 2013

rainbowing 

when different girls each put on different color lipsticks and suck a guys dick and leavs a mark of the lipstick color on it

"yo dude i went rainbowing last night with jess, jess, lis, and kira!"

rainbowing by Jess November 14, 2003