Josh Hutcherson fandom (Yes its a thing): Josh Hutcherson's parents are probably called Josh Hucherdad and Josh Huchermom.

Doctor Who: Yo mamma so fat, the Adipose industry considered her a natural resource.

Supernatural: Yo mamma so fat, the only reason she's alive is because Azazel couldn't put her on the ceiling.

Harry Potter: Yo mamma so fat, her patronous is a cake

Sherlock fandom: Your mother is overweight...