A point in time when a situation is "can't win," as evidenced by all facts and reason...and you need to "know when to fold 'em."
I was going to show the pictures of my soon-to-be-ex-wife with that chain gang, but then I had a "Kenny Rogers Moment" when she brought out the pictures she had of me with the (male) principal of our daughter's school.
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).