fling a bearing
To take and fling an old ball bearing at another drivers windshield while on the highway during an act of road rage.
Right before he swerved off the road into the embankment, the tattooed biker decided to fling a bearing at the soccer mom driver in the minivan who accidentally cut him off on the highway. Afterwards the biker woke up in a hospital bed with the television tuned in to the cartoon channel.