The Custard Dunk is exactly what it sounds like - a semicircular vat of yellow gunge is cut into the floor, with the player suspended above it on a seat that can tip forwards. Opposite them, a second player stands under a vat of translucent "grease" slime. The player above the vat has to direct the free teammates to push a certain number of the large buttons on the wall, with one unknown button dropping them in the vat. If the trigger is not pushed, the second player is gunged instead.