Life Is A Joke (Especially In The Pubs O.B. Hangs Out In)

A man with a backpack walks into the pub. They chat to a regular at the bar:
Regular: "Are you OK? I noticed you were limping when you came in."
Backpacker: "My leg does ache a bit."
Regular: "Perhaps I can help. I'm a physiotherapist."
Backpacker: "Pity you're not a carpenter. It's a wooden leg."

OVERHEARD BY O.B.