First said on film (I believe) before the game at Illinois a couple of years ago. Anyone got the video? Use is to see if his players are up for the game as a question - "Is your dad gum chili hot?"
I was always a bigger fan of "You wanna get some, you better bring some - right?", but the Dadgum chili bit has always been solid to. I like chili. A lot. Therefore, I have sort of a guttural response to that kind of motivation.