This is a true story - just happened. It was very funny as it happened. I hope it remains funny in print. My wife and I were sitting on a rather nice wooden bench in the communal garden by my mothers flats. Because of a previous theft it was chained to a tree. My wife spotted the chain, looked puzzled and said "why is it chained up?". I replied "to stop anyone from stealing it". "Oh" she said, apparently satisfied, then puzzled again requested "but who'd want to steal a tree?"
(From the "Rest" of RHF)