No pee, poop or fart was harmed in the following joke...

A woman had just got out of the shower and her husband had just got in it when the doorbell rang. She hurriedly wrapped the bath towel round and went down to answer the door. It was Bob, their next-door neighbour.

"Cor, look at you!" said Bob. "Fifty quid if you drop that towel!"

She obliged, and Bob handed over the fifty quid.

"Who was that at the door?" her husband called down.

"Oh, only Bob," she replied.

"Ah. Did he say anything about the fifty quid he owes me?"