out of one's mind
- (idiomatic) Insane, crazy.
- You're out of your mind if you think you can jump that far.
- (idiomatic) Temporarily mentally unstable; very distressed.
- When you didn't phone home, we were out of our minds with worry.
- (crazy): off one's head, out of one's box, out of one's gourd, out of one's head, out of one's skull, out there
- See also Thesaurus:insane.