Stick it in his arm, push the plunger, pull it out; and wait for him to die.
He'll remember the fellow they called 'the plunger,' and 'the dead-game sport.'
The plunger is loaded with a spiral spring, and has a ball valve, as shown.
In this form of grenade a safety pin holds the plunger from the cap.
"And the little soft has nibbled at Plunger's bait," laughed Stanley.