Food, typically from a fast food eatery, which when consumed makes you look like you are a filthy pig.
Tim: "So, where did you say that you saw her?"
Joe: "At McDonald's stuffing her face with a pigpie!"
Tim: "Gross! No wonder she has cankles
Matt: "Ugh, why do I feel so sick?"
Dan: "Because you just stuffed your face with that disgusting pigpie."