I tell my dorf: "Hey, go put that harmless unarmed GOBLIN into the pit".
Dorf says: "Right you are sir. One GOBLIN in a pit coming right up."
"HOLY SHIT A NAKED GOBLIN!?! I COULD NEVER HAVE PREDICTED THIS!! LEG IT!!"
Dorf runs off like a fucking idiot, leaving the Goblin to wander aimlessly around the fortress, until it either runs into one of my war hounds or falls into one of my cage traps and is caught again.