off your nut

off (one's) nut

Crazy or insane. I think you're off your nut for changing careers this late in life, but, hey, follow your dreams. He's off his nut if he thinks he can get that engine fixed by this weekend.See also: nut, off

off your nut

out of your mind; crazy. informalSee also: nut, off

ˌoff your ˈnut

(British English, informal, spoken) crazy: Is he completely off his nut? Nut is an informal word for your head.See also: nut, off