avoir un grain

to have a mole; informally, to be crazy or have a screw loose

→ avoir
phrase Rare #42,481
to have a mole; informally, to be crazy or have a screw loose In the expression avoir un grain de beauté, grain de beauté means “mole.” On its own, avoir un grain is an informal way to say someone is crazy or has a screw loose.
FR: Vous avez un grain ?
EN: Are you crazy?