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1.
The shit rainbow:
Purple: putrid gameplay
Blue: bad music quality
Green; Graphical farts and garlic
yellow; Piss poor keeping the source
Orange: Orange you a fucking idiot
Red: horrible rage educing masochism
-The Angry Video Game Nerd
LJN is classified as a shit rainbow
by Slenderman666555444 January 01, 2012
 
2.
The description of a super happy, peppy, annoying individual- having the gall to always smile, offer inspirational words in even in times of obvious tragedy. When faced with such an individual, you will have the overwhelming desire to punch them in the face! They are soo unbelievably happy all the time, they MUST shit rainbows!
" I just got fired and my Grandmother died. This is a horrible day! I just want to crawl in bed and hide from the world."

"Really? I just lost an arm in a freak vending machine accident. But the sun is shining and the birds are singing! What a wonderful day!"

"Omg- are you effin' kidding me?! Do you shit rainbows,too?!"
by Aquanetta Chilipepper April 07, 2010