A person which comes across as egotistic, arrogant, or blatantly self-righteous. Symptoms of being exposed to a frosty ass nigga include but are not limited to: eye rolling, ignoring, lose of brain cells, aggression and agitation, fleeing the scene, commuting murder, putting earbuds/headphones in, and suicide.

Noun: frosty ass nigga, frosty nigga, Mr. Frost
Verb: frost
Adjective: frosty
"I just got the PS4."
"Dude! That fucking sucks. I just built my PS4 and Xbox One. My programming is so amazing that Microsoft wants me to be the new CEO and President."
"Shit the fuck up for I beat the brain matter out of you, you frosty ass nigga!"
by CantStandTheFrost March 22, 2014
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