From the Wikipedia:
Although it was written and directed by an American and was filmed in Miami, Florida, Porky’s was funded by a Canadian production company, which means that it is classified as a Canadian film. Porky’s is the highest-grossing Canadian film of all time in domestic box office. In October 2006, Bon Cop, Bad Cop appeared to surpass Porky’s in nominal box office revenues, but as of the end of its theatrical run, Bon Cop, Bad Cop had not surpassed the inflation-adjusted revenues for Porky’s. Taking inflation into account, Porky’s has grossed more than twice what Bon Cop, Bad Cop has earned to date. Porky’s is also the highest-grossing Canadian film of all time internationally.