Got an inadvertent funny whilst booking out by phone yesterday (won't say where to protect the lady's embarrassment).
Having been passed our outbound details, she asked me if we were returning later, to which my answer was yes. She asked me what time; I said it wasn't confirmed yet.
Her answer was "Let me know what time so I can do a strip for you".
She got the joke a second before I did! Howls of laughter from the other end of the phone, shortly followed by mine!
Really made my day.