Revealing mistake: When Craig (Ice cube) is in the bathroom with his father on the toilet and the camera pans back, you can see the father still has his boxers pulled up while he is on the toilet.
More trailers
More mistakes in Friday
Smokey: I got mind control over Debo. When say shut up, I be quiet, but when he leave, I be talkin' again.
Trivia: When Craig is talking to his girlfriend on the phone and she asks who he "went to the show with", you can see a guy lying in her bed in a pair of Dicky's pants.
Answer: "Today was a good day", or possibly "Hittin' Corners".