When a man takes a diarrhea shit on a woman's tits then titty fucks her, this makes a chili dog. To add the cheese he blows his load on her tits and then somebody else titty fucks her for a chili dog with cheese. This is a highly advanced move not intended for amateur use. Not for the faint of heart.
When anal sex is being enjoyed and the "catcher" shits on the dick that is in their ass and then the "catcher" proceeds to perform fellatio on the poop covered cock.
Is when a guy shits (the chili) between a womans breast (the buns), and the guy sticks his cock (the hot dog) in the shit and proceeds to titty fuck her as she sucks the tip of his dick at the same time, eating the shit (the diet). Hence, the "Chili Dog Diet".
My buddy John keeps his bitches on a Chili Dog Diet then sends them home to kiss their husbands and childrengood night.