When the late Tony Capstick was booked for a gig down south, the club organisers made the faux pas of booking him into a local hotel without a bar. Sober but ill-tempered, he became irritated by a prosperous-looking German man who was dominating the conversation in the lounge, and broke into the man's monologue...
"You're German, are you?
"Yes, that is so."
"My father used to go over to Germany on business."
"Oh, what business was he in?
"He was a bomb-aimer in a lancaster."