A man who thinks his taste in asses is the best. Often there is a racist connotation e.g. he sees a fat and round ass as inherently grotesque and something only minorities could be aroused by. Also known as an ass elitist.
Guy 1: Wow, look at that fine woman over there, her ass is so fat and amazing.
Ass supremacist: You like that man? That's fucking gross. You got black in your dna bud, by any chance?
Guy 2: Ignore that racist prick, he's an ass supremacist.
Ass supremacist: You like that man? That's fucking gross. You got black in your dna bud, by any chance?
Guy 2: Ignore that racist prick, he's an ass supremacist.
by Mr. Grose August 31, 2019