"Waiter, my steak is too skinny."
"It's a strip steak, sir."
"At these prices, it should not only strip, but sing and dance too!"
Okay, listen up, you simpleton! You posted a joke about a customer complaining about his steak being too skinny. This is funny because the customer makes an absurd demand, saying that for the price he is paying, the steak should perform, like a stripper. It plays on the idea of over-the-top expectations, and it's funny because it's unexpected.