Terrible jokes thread

Why does the state of Pennsylvania require only one vehicle registration plate? (In the back, of course.)
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Because most pinches are made from the rear.

 

A string walks into a bar. He asks for a shot of tequila. The bartender says "Sorry we don't serve strings". So the string leaves.

The next day, the same string walks back into the bar. He asks for a shot of tequila. The bartender replies "Sorry we do not serve strings, please go away."

The following day the string stands outside the bar debating about whether he should go in. He ties himself in a knot and frays the end.

He goes in and asks for a shot of tequila. The bartender asks "Hey aren't you that string that's been coming in here all the time?"

They string replies "No I'm a frayed knot".