A girl is blowing you, you pull out, cum in her mouth then immediately punch her in the face as hard as you can. Then you descend your balls into her cum and blood-filled mouth. This creates the sandwich: sauce (blood), cheese (cum), and balls (self-explanatory). This is best performed with a monkey and an organ grinder in the corner creating musical accompaniment.
Bunny Teeters was in the mood for something a little exciting, so Butch Putchy decided to spice things up by giving her an Erie Meatball Sandwich and knocked out three of her teeth.