Slippery Pineapple

The act of inserting a coconut oil covered live grenade, with spoon attached, into a person's anus. Either they perform a constant kegel or the grenade is ejected with a wet pop to kill them.

"What happened out there?"
"I don't know, sir. They gave Johnson the old Slippery Pineapple. There was just a loud wet pop and he was gone "