Am I a MexiCAN or a MexiCAN'T?

After seeing a movie a while ago, a friend thought it would be cool to use the signature phrase from the movie, 'Are you a Mexican or a Mexican't' on me ..... repeatedly. Much to his amusement. I have decided to take some steps towards becoming a MexiCAN rather than a MexiCAN'T. I have decided to start taking Spanish classes on Mondays and Thursdays. Should be good, as the teacher is interesting, comical and sincere.