Factual error: Hockey player Derek Thompson is nicknamed "Tooth Fairy" because he often knocks out the teeth of opposing players. His car license plate reads #1 TOOTH. In Michigan, where the movie takes place, the symbol # is not available for use on a license plate.
Factual error: Derek's license plate not only contains an illegal character (and Michigan's Secretary of State seems to be quite strict on vanity plates too), but also the state of MI issues just one plate. Derek's car has identical Michigan plates both front and back.
Factual error: When Derek Thompson is seen with his full hockey gear on without a jersey, he is wearing the wrong type of chest protector. The type he is wearing is only used by goalies, not skaters.
Answer: It was all Black Market merchandise. Usually not of any good use; total rip-off.