Laissez les bons temps rouler
The expression Laissez les bons temps rouler is a Cajun French phrase. The phrase is a calque of the English phrase "let the good times roll"; that is a word for word translation of the English phrase into Cajun French.
This phrase is often mentioned in Louisiana and around the Gulf Coast where Mardi Gras is celebrated. It is well known touristically around the United States from television and radio.
It is not an expression used in other French-speaking countries.
