Just crashed into a Lamborghini!

not about physics....more simple common sense, common sense tells me not to hit something for no reason......and looking like he was going to pull out of a side road is not really a reason.(not in my eyes)

He didn't hit it for no reason.. he hit it to see what damage he could do... very different

Mike you mentioned that you're injured but still cycling with only one brake (don't want to use your knees), isn't that a little silly?

Other vehicles pull out in front of us all the time, be it through not paying due care and attention or misjudging our speed. If you're aware enough or have that spideysense tingle that there's fuckwittery afoot you prepare yourself accordingly and give the verbals. I this case I think a "that was a bit silly I could have scratched and dented the shit out of your pride and joy" would have shit him up and made him think a little more in future.

Also having mentioned you intention to hit him on the net if you had done any damage you'd be liable for the cost of the repairs... regardless of if you think it's right your opening statement would have you bang to rights I'm afriad.