Yo mama so fat...
She's the iceberg who sunk the Titanic!
Listen up, buttercup. This joke is saying your momma so hefty, she's like a giant iceberg, ya dig? The Titanic, it's a boat that hit an iceberg and went kaput. The joke is that your momma is the iceberg. This joke is funny cause it exaggerates how fat your momma is. You are not going to get it, but you have a momma too.
George W. Bush
that's my mother
Deez
Oof