round the bend

Từ điển Oxford Advanced Learner 8th

▪ I. round the bend/twist idiom
(informal, especially BrE)crazy
• She's gone completely round the bend.
•The kids have been driving me round the bend today (= annoying me very much).
Main entry: ↑bend_idiom
 
▪ II. round the bend/twist idiom
(informal, especially BrE)crazy
•She's gone completely round the twist.
Main entry: ↑twist_idiom