The rage expressed from seeing too many rainbows.

This is especially prominent among homophobic individuals who express their frustration at seeing too many rainbows through angry words or violent behaviour targetting the lesbian, gay, bisexual, and transgender (LGBT) community as a whole, or its individuals.
Oh no, that man just ripped up a gay pride flag. He's got a major case of rainbow rage.
by Synna June 29, 2015
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The anger felt at others while playing Mario Kart.
A: *drops banana peel*
B: *hits banana* YOU MOTHERFUCKING SHIT DICK!
C: What's his problem?
A: He's got Rainbow Road Rage.
by The Wang of Lee June 8, 2014
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