A few years ago my singing partner Margaret and I were persuaded to do a gig for the Colchester Salvation Army Over-Sixties' Club (prestigious or what?). We carefully chose a lot of gospel material which was received politely but unenthusiastically. In a moment of desperation I decided to end the set with a song that's been mentioned in this thread, I Just Don't Look Good Naked Any More.
This totally inappropriate ditty went down a storm with the elderly audience but not with the organiser. She complained later that her club members had loved the song and talked of nothing else for weeks but she was sick of it. Audience happy and we didn't get invited back. Result!