Your momma is so fat, the whole Earth falls down to 100,000,000 ft.
So Fat...
Explanation
Explain Bear
Alright, listen up, buttercup. This joke is all about your mom being so chunky that her weight makes the whole Earth sink a heck of a lot. We are talking 100,000,000 ft which is so deep that your head would explode from the pressure. The author of this joke probably still wets the bed.