What is laissez les bon temps?

Laissez les bon temps rouler is a French-Cajun expression that translates to "let the good times roll." It is commonly associated with the celebration of Mardi Gras in New Orleans and is used to encourage others to have a good time, enjoy themselves, and let loose. The phrase reflects the festive and carefree atmosphere of Mardi Gras and the spirit of revelry and fun that surrounds the event. It is often shouted or displayed on banners and signs during Mardi Gras parades and celebrations in New Orleans.