Early onset necrophilia
When old farts get it on while shoving a grilled cheese apart with a sausage that’s been in the freezer since the last ice age.
Grandpa tried to make out with his sandwich, but the sausage was tougher than his ex-wife.
Aunt Mildred had sex with her neighbor while splitting a grilled cheese with a sausage that smelled like regret.
Uncle Bob and his friend had a wrestling match over a grilled cheese and a sausage that was probably dead.