do your nut

do (one's) nut

To become very angry. Primarily heard in UK, Australia. If these kids don't start listening to me, I'll do my nut!

See also: nut

do your nut

BRITISH, INFORMAL

If someone does their nut, they become very angry about something. I wanted to ask Lorraine out and I knew that Wendy would do her nut if she found out.

See also: nut

do your nut

be extremely angry or agitated. British informal

In this phrase and in off your nut below, nut means ‘head’.

See also: nut

do your ˈnut

(British English, informal, spoken) be very angry or worried: He’ll do his nut when he sees all that mess. ♢ She’s doing her nut because she hasn’t heard from her son for weeks. She’s sure that something terrible must have happened.

Nut is an informal word for your head.

See also: nut