Continuity mistake: At the end of the movie, the two balloons are in the air. As one of them goes down to land, we see a shot with balloons on the ground. In the next shot, one of them is still up and flying.
Continuity mistake: At the end of the movie when Tackleberry glides down the balloon you can see that the color/shape of the balloon changes between the closeup and far off shots.
Continuity mistake: In the middle of the film when the guys are playing basketball, Hightower slams the ball in the ground making a huge crack in the pavement. But when Proctor enters the basketball yard the crack is much smaller.
Continuity mistake: David Spade switches from regular foot to Goofy foot multiple times in the skateboarding scenes.
Continuity mistake: When Zed and Sweetchuck are in the plane, Zed has his googles on, but a shot later from the opposite angle they're hanging loose behind his head.
Continuity mistake: When Harris places the bullhorn filled with glue on his mouth, the angle shot from the side shows him lowering it and removing it from his mouth, but the front angle shows his hand straight and his mouth glued to the bullhorn.
Continuity mistake: In London, Hurst is either holding the fish bowl parallel or perpendicular to him depending on the shot.
Continuity mistake: In London, after Lassard tells a joke Nogata is either clapping or not depending on the shot.