Jarts. Used to have a couple of sets at the house when I was younger. They were a lot of fun!
You old. LOL. Those have been gone for a long time! At one point replaced with plastic round nosed versions. Not the same though.
From Wikipedia:
"...on December 19, 1988, the U.S. Consumer Product Safety Commission introduced an outright ban on lawn darts in the U.S. In the previous eight years, 6,100 Americans had visited hospital emergency rooms as the result of lawn dart accidents. Of that total, 81% were 15 or younger, and half were 10 or younger.."