If you are French, you might have already heard about franponais, it’s when the Japanese use a French word and either it is completely mispelled or either it gets a very funny meaning. Here’s a good example:

Si on vous le dit...

I guess you can imagine what kind of stuff the shop is selling. It’s a shop close to Roppongi I think. Anyway, “C’est bien” in French means literally “It’s good”, you even have the katakanas below if you are unsure about pronunciation. I’m always amazed to see how French can be used in Japan …