What you'd say about a man who has an absolutely massive ass. Earth shattering, horizontally oversufficient, claps you can hear across the universe.
Person 1: Dude look at that guy, he has an aunt jemima milkshake ass!
Person 2: Shut the fuck up bro, it's not that massive
A man who has an absolutely massive ass. Earth shattering, horizontally oversufficient, chair breaking, ass. Typically used with straight male friends.
John: Hey, whats up man?
Bob: *slaps with the force of a horse's kick* What's up! Damn he got that Aunt Jemima Milkshake Ass!
John: Damn that shit hurts