Steering Wheel Pirate

A pirate walks into a bar with a steering wheel attached to his dick.

The bartender asks him why.

And the pirate says:

"Argh, It's driving me nuts."

Explanation

This is a pun-based joke. The punchline plays on the double meaning of 'driving me nuts'. In the literal context of a pirate with a steering wheel on his genitals, it means that the steering wheel is causing him distress. Figuratively, it means he is annoyed or frustrated. It's funny because it's unexpected and absurd to have a steering wheel on a penis.