Bon appétit!
If you are thinking of going on the show and intend using the phrase bon appétit, I'd like to recommend some research into how it is pronounced. It is not hard.
As a guide - don't pronounce the last "t". I think a woman got it right in the fifth series.
Also, when the last person turns up it is compulsory to say, "last but not least!!!". Always gets a laugh!