Misspelling of barbecue-food marinated meat cooked usually outside on a hot grill. Also erroneously called barbeque by dumbasses/Southerners and lazy spellers.
Guy 1: Dude i'm bored what do you want to do tonight?
Guy 2: Well i stole this gallon of Bar-B-Que sauce...
Guy 1: Are you thinking what i'm thinking Guy 2: Bar-B-Q'in it
I was so depressed, I committed Bar-B-Quicide, by eating the entire "Flaming Bunghole Ghost Pepper" sauced rib rack at Jack Auf's Meat Shack with a hot coffee to wash it down.