Watch the mad chemist the Joker try to concoct a crazy cake for harley quinn and then adds his own unique signature to it.
See his directions below (don't follow literally)
INGREDIENTS: Any cake mix, one cup of water, one-third cup of oil, three eggs.
DIRECTIONS: Tear into your favorite box cake, Ha - fill your beakers with the water and oil, maniacally - heehee - smash three eggs - hAhaHa - Fervently mix into a bowl or on the floor or up in the air -HAahahahaha - bake - Ha HA hee - once cooled, decorate as yourself and when the urge to sMasH takes over - HAHahaha - plant your FaCE right in that cake.......look up and smile. HAHAHAHaHahahhah