of course it can be done, it'll just be like a glorified knuckleduster.
I don't see the point, there are more fun ways of pissing of cars, without having to be a twat yourself.
Like when a dickhead is trying to overtake you where there is clearly no room (around a corner for example) pulling out into the middle of the road and sitting there till his horn starts blaring and people stare at him like he's the stupid tiny-penised throwback that he is.
problems i see with it, 1 uncomfy, 2 breaking fragile hand bones when you fall on it, 3 hitting your self with the bit of medal.
problems i see with it, 1 uncomfy, 2 breaking fragile hand bones when you fall on it, 3 hitting your self with the bit of medal.