Deliberate mistake: All Minor Hockey Leagues in North America require players to wear visors with their helmets.
Character mistake: Dwanye Johnson is called onto the ice, the first thing he does is throws a player through a glass pane. The player looses a tooth. The close up shows that the tooth is a molar, but the commentators say, seconds later, "Ohhh that's an incisor!" (00:01:00 - 00:02:35)
Derek Thompson: You can't handle the Tooth! And that's the Tooth, the whole Tooth and nothing but the Tooth! I pledge allegiance to the Tooth.
Trivia: When the goalie is scared away by Billy Crystal during the end credits, he yells the Wilhelm scream.
Answer: It was all Black Market merchandise. Usually not of any good use; total rip-off.