A *cow*culater. I made it up myself, so don't groan at the pun.
Dad jokes are punnier.
Mandel broth Ha ha ha The puns I make up while working as a grocery cashier..
He worked it out with a pencil
It was a no buena My girlfriend is Mexican so I love Mexican jokes. Let me know if you have one!
Sir. Groan worthy penguin jokes(https://allwrong.wordpress.com/2007/10/05/penguin-riddles/)
They're all, like, equal to me...
A math problem.