Robin opened one eye—the one toward the house—and half-cocked an ear.
I've told you they won't go off half-cocked as long as Westfall is on the job.
Alone, she might have gone off half-cocked in an emotional tizzy.
"If you're going off half-cocked, then we both are, Dave," he said quietly.
He is the most level-headed member of 162 the family, and would not fly off half-cocked.