Allez France! (The Counterfeit Constable) (1964)

An extremely funny film about a group of French rugby supporters who go to see a match at Twickenham and one of them inadvertently receives a blow in the mouth from someone else's elbow. In the process he loses some front teeth and needs to see a dentist urgently ... this is only the beginning of a long series of adventures befalling our poor friend who doesn't speak a word of English and who nevertheless needs to return urgently to France to get married in the following days sporting a decent mouth !