When your having anal sex and you slip your dick through a slice of American cheese and continue to rupture her anus, hence the name, cracking the bun off the cheese.
An example for Cracking the bun off the cheese:
“Yeah Susan, Earl was taking me down to pound town and then he grabbed a slice of American cheese and stuck it in the wrong hole and he cracked the bun off the cheese.”
Basically a way to get rid of someone permanently, forever. Terminate the relationship with the individual to never speak to them and them ever speak with you.
Can b e used anywhere, to terminate any relationship with that work colleague you dislike, your fuckhead boss or anyone else who gets on your nerves and irritates you, in any walks of life.
him.her: "Blah blah blah blah blah complaincomplain, blame blame, criticise..."
You: Look, FUCK OFF, you're the cheese off my cock!