She jokes

Yo mama's so stupid, she put airbags on her computer in case it crashed.

Yo mama's so stupid, when I said, "Drinks on the house," she got a ladder.

Yo mama's so stupid, she got locked in the grocery store and starved to death.

Yo mama's so stupid, she took a ruler to bed to see how long she slept.

Yo mama's so stupid, she went to the dentist to get a Bluetooth.

Yo mama's so stupid, when thieves broke into her house and stole the TV, she chased after them shouting, "Wait, you forgot the remote!"

Yo mama's so stupid, she thought a quarterback was a refund.

Yo mama's so stupid, she put lipstick on her forehead to make up her mind.

Yo mama's so stupid, she stared at a cup of orange juice for 12 hours because it said "concentrate."

Yo momma's so fat, she doesn't know how to play bacon.

Yo momma's so fat, when she skips a meal, the stock market drops.

Yo momma so fat, whenever she goes to the beach, the tide comes in!

Yo momma so fat, when she gets in an elevator, it HAS to go down!

Yo momma is so old, she farts dust!

Yo momma's armpits stink so bad she made Right Guard turn to left.

Yo momma so dumb, when your dad said it was chilly outside, she ran outside with a spoon.

Your mama is so fat, when she farted, the world had to wear gas masks.

Yo mama so fat she has her own gravity.

But she so ugly people are repelled by her.

My teacher gave me an A in Physics, then she tells me that it turns guys on.

My sister told me only onions make you cry, so I always hit her back when she hit me, but I hit her with a shoe only to catch her cry.