They knead dough
Did you ever notice he seems to start off all of his jokes in one of two ways
Because as soon as they start they get fired.
At yeast he's a fungi.
Something going a-rye while they're raisin' bread.
Because he really kneaded the dough. (please forgive me for that awful pun)
Because he kneaded a poo.
They dough nut have anything in common.
If they are thick, they have a hard time to rise