"Pop Goes The Joker"
Joker ties Bruce Wayne up in a chair and forces him to watch as Robin is tied to a giant revolving mobile, his latest work of art. The mobile is covered with razor-sharp pallet knives that are descending towards Robin.
"Robin diced to driblets?"
Bruce is able to tip himself over, and walks over to the machine's switch on his knees. He leans against the switch, pausing the machine's rotation. Robin tears himself loose from his bonds, and uses one of the pallet knives to disconnect the drive belt of the machine so they can escape.
Joker infiltrates the world of pop art.