Deliberate mistake: When the father hands the porno mags to his son, if you look real carefully, you can see the son hide one of the covers from the camera with his hand. (00:25:39)
Deliberate mistake: In the scene where Alicia Silverstone and Dave Foley are in the porno store, they cut to a guy standing behind a counter. All of the explicit shots of the videotape covers on the countertop are blurred out.