Yo mama so fat, when she goes to the movies, she sneaks candy in her fat rolls.
Fat Rolls
Explanation
Explain Bear
Alright, listen up, buttercup. This joke is all about how someone's mom is super overweight. Like, so big that she can hide snacks in her body folds at the movie theater. It's funny because it's an exaggeration, and let's be honest, probably because you are fat too.