by uberdown April 27, 2015

by tdogg1165 April 6, 2017

by Playboi87654321 May 18, 2020

Not hard, just incredibly frustrating. If you pay attention you will still have a hard time. If you’re about to begin this annoying test, buckle up, you’re in for a ride.
Oh no I have rainbow lab and didn’t study. Now I have to sit there staring at the unanswerable problems for 45 minutes.
by I hate out of door academy March 22, 2019

by Mike Kewosiskie December 12, 2013

by lolzalot May 30, 2009

The act of spontaneously vomiting a rainbow, most notably when an individual’s level of thankfulness and/or excitement/joy in regards to being thankful reaches an overwhelming level. It is the highest level of thanks one person can give to another.
Thank you so much. This is so awesome, I could just rainbow ralph.
Kenneth was so excited, he rainbow ralphed.
Kenneth was so excited, he rainbow ralphed.
by justWink June 10, 2011
