When the pin is pulled, Mr. Grenade is not our friend. If it's stupid but works, it isn't stupid. When in doubt empty the magazine. Anything you do can get you shot. Including doing nothing.
Mines are equal opportunity weapons.
A Purple Heart just proves that were you smart enough to think of a plan, stupid enough to try it, and lucky enough to survive. Don't ever be the first, don't ever be the last and don't ever volunteer to do anything. Five second fuses only last three seconds. Your weapon was made by the lowest bidder. You are not supermen.