Fuzzy, deliberately unlocked handcuffs on Prepotente's wrists that sell the fake bounty capture.
To get past the ram Mork, Carl points to Prepotente's wrists, shackled with fuzzy, not-locked handcuffs, and claims he has captured the goat to collect the Holy Crusade Bounty.
When Prepotente hurls himself to the floor in an operatic fake surrender, the handcuffs jingle ominously and Carl is briefly afraid they will go flying off his wrists and blow the con entirely.
Fuzzy novelty handcuffs, never actually locked, that jingle loudly with any movement.
The flimsy prop that sells Carl's captured-prisoner ruse at the club door.