Rainbowed 

(rān′bō′ éd)

When a doof's atmosphere elevates to such an extreme level that it causes the releases of natural endorphins in the brain. These endorphins, combined with the enriched nature of your soul and a mixture of substances as copious as they are numerous, combine into an potent cocktail causing a blissfully euphoric emotional state in which one's identity and conscience merge into the festivals collective-being. Often expressed by dancing.

I was at Rainbow Serpent Festival with the rework crew last year, everyone was so rainbowed.

Rainbowed by howsyarainbow?havingagoodtime? February 4, 2014

Farting Rainbows 

Meaning to be happy or excited in a sarcastic way.

Example 1 - I am so happy, I am farting rainbows

Example 2 - gee... your not having fun, because I am farting rainbows over here.

Farting Rainbows by kjj5hf October 27, 2009

Puking rainbows

(pyooking reyn-bohs)
1. to vomit rainbows at the sight of something amazing on teh internet.

2. To be overwhelmed with cuteness that you puke rainbows.

Antonym: vomiting

Please don't use this(or any) meme outside of the internet.

Cuteness overload, I'm puking rainbows.
or
I can't believe I got a reply from (insert celebrity's name here) *pukes rainbows

Puking rainbows by MPVTOX January 18, 2012

Shoot rainbows out of my ass 

Extreme happiness beyond comprehension.

I'd like to meet new people (in person) and increase my social circles. If something clicks I'd like to get to know that person better in the name of dating. Eventually find eternal happiness and shoot rainbows out of my ass as I ride around on my unicorn for the rest of my life.

Shoot rainbows out of my ass by Doc Molly February 26, 2015

Rainblowjob

When the girl puts a drop of food coloring of each color on her tongue and gives the guy head. When he comes in her mouth, she mixes it in her mouth and spits out a rainbow.

Dude I found some extra food coloring in my closet so I gave my girl a rainblowjob!

Rainblowjob by Slydog11 November 1, 2019

Rainboosie 

A gay best friend you think of as a brother or sister. The bond you share is inseparable.
A LGBT boo

"I'm going to visit my rainboosie at a club."
"Going out to party with my rainboosies tonight."

Rainboosie by Ghostdoll July 2, 2020

Shitting Rainbows 

Someone who has such extraordinary luck that if they were to defecate a beautiful rainbow would come out of their anus rather than faeces.

"Went into town with Jim last night, he ended up shagging a 10/10er and won £100 on a scratchcard"! "Lucky bastard is shitting rainbows".

Shitting Rainbows by Bilbobaggins March 26, 2013