The British playwrite Alan Bennet has a collection of these in one of his books of memoirs. The best is one he claims to have overheard on a bus in Yorkshire:
“Of course, it’s not any use to him now. Well, not as a leg, anyway.”
playwright
At work yesterday I heard the following just on the other side of ye olde cubicle wall:
“Do you want me to turn my head while you put it in?”