Gilbert Arenas' Son: Boys On the Hood

Gilbert Arenas is fun to some ... dangerous to others.

Hibachi took the kids out riding in his Polaris Slingshot and it looks like his son Alijah is on the hood, holding on for dear life.

Gilbert posted the video but then deleted it ... which makes us think someone raised some safety issues about an 8-year-old gripping the hood of a moving vehicle.