A member at the website AngryRainbows.com, typically an LGBT person but also gay-friendly allies. An Angry Rainbow is angry because of the ill-treatment of the LGBT community and they go to this site to bitch about it.
"CALIFORNIA IS TRYING TO ILLEGALIZE GAY MARRIAGE AGAIN!!! FUCK!!!"
"You're such an Angry Rainbow, Tyler."
"You're such an Angry Rainbow, Tyler."
by (Angry) Cas July 14, 2008