Goofs

During the drag race with Julie's hair on fire, in a wide shot from the front of the cars, Julie can be seen with her friend's sweater on her head before she's seen taking it off to put out the fire a few moments later.

The grease slick on the skate arena goes from a thin splotch to a large puddle, after Donna passes through it.

The grease slick on the rollerskating rink goes from a thin splotch to a large puddle after Donna passes through it.

Near the beginning of the drag race with Julie's hair on fire, in a wide shot from the front of the cars, Julie's friend can be seen with her sweater on Julie's head before she's seen taking off that sweater to put out the fire a few moments later.

When Dude lowers his head and uses his hair to make a grease slick at the skate park, his hair actually wipes up part the grease slick that it's supposed to be leaving behind (this is because the scene was actually shot with David Arquette running his head over an already-present grease slick).

When Dude uses his hair to make a grease slick on the rollerskating rink, his hair actually wipes up part of what he's supposed to be leaving behind. This is because the scene was shot with David Arquette running his head over an already present grease puddle.