A few bros went out longboarding on a winding road, and, spoiler alert! They didn't use a spotter. And what happens when you don't use a spotter? That's right: You cause someone's car insurance premium to go up.

Fast-forward to the one-minute mark if you don't want to see the build-up, which is thrilling action of the boarders making a turn on one part of the road (over and over and over again).

[H/T: Reddit]