It's the 2nd pie in the famous two for $1 deal at Mickey D's. After you've finished your entree and your 1st pie for dessert, open the box of the remaining pie and insert your penis. While securing the closed end of the pie box with your index and middle fingers, fuck the pie.
Elliot: "Let me have a number 3 with a coke and a couple of fapple pies...HOT!" Cashier: "You're going to fuck both of them?? My god you're a savage!! Elliot: "One for the ride home bitch."