A Guide to the French. Handle With Care: "Never use the word 'toilette' when asking a host for directions to the powder room; try to avoid going there at all. Never say 'Bon appétit' at the start of a meal. Don't talk loudly. Never discuss your religion or your money at dinner. Eat hamburgers, pizza, foie gras, and sorbet with a fork. Always say 'bonjour' to the bus driver, and to fellow passengers on elevators. 'Pas mal' doesn't necessarily mean 'Not bad.' It can mean 'Great!'