Visible crew/equipment: The slimy goop Lane's mom puts on his plate at dinner begins to move when he pokes is with his fork. If you look closely, you can see the wheels of the stomper or rough-rider truck used to make it move, when it hops off the plate. (00:17:05 - 00:18:10)
Visible crew/equipment: When Lane is spraying the deodorant spray into his arm pit and lowers the can you see the aerosol from the can move away from his body while simultaneously being replaced with a large blast of spray from a larger apparatus. (00:42:25)
Answer: It was an idiotic diet fad in the mid to late eighties.