This is new to me. I'm familiar with egging (intimately) and paintballing. I can't say I was especially targeted, it was startling but the eggs were overall harmless as I only had to rinse off my shoes. Fortunately I've never been hit by a paintball but the local news has reported sporadic incidents with the implication that it is a serious misdemeanor, some YMAs have gotten 1 year in jail when caught.
Anything expelled from a moving vehicle aside from water and chicken feathers ought to qualify as a felony IMO, that includes horrible amplified bassy car stereos.
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Let's go on out and take a moped ride, and all your friends will thing your brain is fried, but you can't live your life too dirty, 'cause in the the end you're born to go 30