What is "tallywhacker"

Usage examples of "tallywhacker".

From the looks of him, he couldn't find his tallywhacker with a six-man scouting party.

Here was the chance he'd been looking for, you would have said, his golden opportunity to put that tallywhacker of his to good use, and he was too scared and confused to do it.

Those tallywhackers yonder must've done so, not to be hanging on the bell ropes now.