Was it not the safety pin that made the world safe for infancy?
When Adam delved and Eve did spin, what did they do for a safety pin?
In this form of grenade a safety pin holds the plunger from the cap.
When the grenade is to be thrown the safety pin is withdrawn.
I know a girl who stuck a safety pin on a stump for a scout sign.
These are only a few of the uses of the ...