Yo, M. That must have been years (decades) ago. You are not then aware that over the years the term Pepsi has come to be seen as pejorative. It was a slang expression for someone who was French. Good way to encounter beaucoup trouble in La Belle Province.

I think it came from the observation that a few French Canadians had a Pepsi and a Mae West for breakfast. (Although I was English, I too often had that for breakfast.)

Trust things are well, M.