Well, there's the expression that something is so wonderful, that it's "to die for"...

Bel, I just recently remembered an expression my Grandma Kane used to use. When we'd call for her, she'd respond in a singsong voice, "I'll be there in two shakes of a dead lamb's tail!" She was one of the sweetest, most gentle ladies I've ever had the pleasure of knowing, but what a hideous expression when you think about it!