How does nerd-sniping with Waymo work? Is it about nerd-sniping a person so they get hit by a Waymo, or is it about nerd-sniping the Waymo itself, distracting i

How does nerd-sniping with Waymo work? Is it about nerd-sniping a person so they get hit by a Waymo, or is it about nerd-sniping the Waymo itself, distracting it before having a human hit it? D'oh, I think I got nerd-sniped there for a second.