Sir. Groan worthy penguin jokes(https://allwrong.wordpress.com/2007/10/05/penguin-riddles/)
Because they always leave you stumped!
What has a foot but no legs?
n"He is a penguin."
Because he got cold feet.
Him: Sir, that's an Olsen twin. Me: I'll take it.
Colonel, sir.
A crow with a machine gun.
A *cow*culater. I made it up myself, so don't groan at the pun.
An ironing board.