Yo Mama Too Ugly

Alright, listen up, buttercup. This joke is all about dissing someone's momma, got it? The Kool-Aid Man, who usually shouts "Oh yeah!" when he crashes through walls, is so disgusted by yo mama's ugliness that he reverses his catchphrase to "Oh no!" It's a simple case of ugliness so extreme it shocks even a fictional mascot. And you, my friend, probably still think the Earth is flat.