RE: how mad would this make you?
I'd have bombed him with my pee jug.
Seriously though
If you take a piece of rebar (very cheap at Lowe's), cut it to about 2 feet, and grindone end, leaving a sharp point sticking up. Weld something to the side, about 3" down from the point, (i.e. a 3-4" piece of rebar horizontally)so that you don't dull the point and you have something to poundwhile you drive it into the ground. If you put it on a steep incline (where the ATV trail comes up a steep bank), the tires really bite right into the tip, and it shreds 'em but good.Not that I would know. Because I wouldn't.
If he cost me a buck, I'd cost him some tires. Fair trade, I'd say.
I'm not jokin' about the pee jug either - I'd have whipped that baby at him.