off one's box

1.
chiefly BritishIrishcolloquialinformalslang
- Mentally unbalanced or behaving irrationally; not in one's right mind.
- Acting in a way that is wildly eccentric or unreasonable.
2.
colloquialregionalinformal
- Not functioning normally or not at one's usual level; disoriented or thrown off one’s routine.

Examples:

No examples available.