I think I have read following expression somewhere:
Is this an existing expression (so I remember correctly)? What does it mean?
French Language Stack Exchange is a question and answer site for students, teachers, and linguists wanting to discuss the finer points of the French language. It only takes a minute to sign up.Sign up to join this community
Yes, such an expression exists in French but it is not mainstream and won't be understood by everyone.
Beware that the same expression might be used with different meanings, for example to tell what hot beverage you like :
– Tu veux un café ?
– Non merci, moi je suis chocolat.
It might also be used to tell you wear something color chocolate, or that your hairs or your skin has the same color.