Yo momma's so fat that Mount Everest tried to climb her.
Yo mamma so stupid she tried to put M&M's in alphabetical order.
Yo mama's so fat when I pictured her in my head she broke my neck.
Your momma is so stupid she put airbags on her computer in case it crashed.
Yo momma's so fat, her measurements are 36-24-26, and that's just her left arm.