McKenzie Meatloaf
The application of raw ground beef and various sliced or minced vegetables to someone's ass crack (generally while passed out drunk), followed by redressing the victim, allowing the meat loaf to "bake" until the victim wakes up.
Man, I got so tired of stepping over Joe after he passed out Friday night I grabbed some meat from the fridge and started making a McKenzie Meatloaf in his ass. The whole party joined in!