The "adult" thing to do would have been to file a police report... Good luck getting anything out of it though. The "not-so-adult" thing would be to flatten his tires by any means necessary then find some dog poo and stuff it up under his door handles. What would I actually do? It depends if there was anyone with me to calm me down. Sorry about the scratch on the forks but at least he didn't fricken knock it down, back over it.