How do you call someone a salad in french?

There isn't a direct equivalent in French to calling someone a "salad" as an insult. The closest translation would be "salade", but it wouldn't carry the same derogatory meaning.

It's important to remember that insults often rely on cultural context and nuances. There may be other French expressions that convey a similar meaning, but without more context, it's difficult to provide a direct translation.

Perhaps you could give me more information about the situation or the type of insult you're looking for? Then I can help you find the right expression.