Often when people speak English, they will throw in a French expression, sort of how you'd use a slang word, in order to sound sophisticated. Many people think this sounds pretentious and makes things hard to understand. Literature often has many of these. Some examples include joi de vivre, le petit dejeuner, je ne se quoi, and garage. "Oooh la ti dah, Mr Frenchy. Garage! haha Garage!" "Why? What do you call it?" "A car hole" -Simpsons