To lose one's head

Also found in: Idioms.
to lose presence of mind.
to be thrown off one's balance; to lose the use of one's good sense or judgment, through fear, anger, or other emotion.
- Macaulay.

See also: Head, Lose

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
It's a great mistake, to lose one's head. But my heart's in the right place.
But we think Calliope Theatre sounds like quite the place to lose one's head in the fun this weekend.