The name of the cum that you produce when you orgasm specifically when you are high
"Bro my Rainbow Cum last night dude was off the scales!!!"

"Bro same dude!!!"
by chocolatethunder19 August 14, 2017
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the cum know to be made by unicorns.Often is mixed with fairy piss to make hallucinogenic.
Dude Rainbow cum fucked me up last night so bad that I shit on my dog.
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When a man ejaculates his semen from a distance into another individual's mouth. The individual receiving the semen is sometimes referred to as "the pot of gold" at the end of the Cum rainbow.
Justin positioned himself 2 meters away from Ryan, and with great precision, managed to ejaculate into Ryan's mouth. Justin had achieved a Cum Rainbow.
by Dezmuz June 1, 2016
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To splooge in an explicit, uncontrolable colourful way
"The boner i have is so vicious, i could cum rainbows"

"That chick was so hot, i swear i almost came rainbows"
by ToastyXP October 20, 2008
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the rainbow dash cum jar is a reddit post that depicts a rainbow dash figurine submerged in a mason jar full of cum. the owner of the jar would frequently update the posts and show the cum that has been added. the jar was later accidentally boiled over a space heater, turning the liquid brown.
“have you heard of the rainbow dash cum jar?”
by epic bruh moment February 29, 2020
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A act so vile and inhumane that the very mention of it alone will have you shunned from society.
Why don't you talk to john anymore

Oh, he did a rainbow dash cum jar
by duderuthless February 29, 2020
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When a gay furfag gets jack off on by a bunch of gay old guys and gets totally owned.
That Rainbow bright cum dumpster needs to shut his cum sucking ass up.
by havoc3149 November 10, 2007
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