When Wadska is peeing in the fountain, his leg hair is gone. But when he's washing himself in the fountain, his leg hair is back. Also when Wadska is peeing in the fountain he has no butt-hair. But when he's washing himself in the fountain, he is shown with butt hair.
When Mondo and Woodie are entering Wadska's house, the magazines that are hanging disappear when Wadska enters the room.
When Mondo enters Jeena's room, there are clothes on the floor. But when Jeena catches Mondo in her room, the clothes are gone.
When Mondo shot paintballs in Jeena's room, there was a green paint that was floating and was not on the wall.