Another piece of legal idiocy I've learned of from the state where having a round of spent .22 brass stuck in the treads of your Reebok is a felony: Suppose you're shooting at the local indoor range, and the guy on the next lane over mutters a curse and then leans over towards your booth, saying "Hey, buddy, I'm all out of ammunition over here; I'll give ya five bucks if ya got an extra box of .22 ya can spare." What do you do?
Well, according to Title XX, Chapter 140, Sec. 122B of Massachusetts state law, you have to say "Tough luck, buddy; I don't want to go to jail for two years for engaging in a voluntary act of capitalism between two consenting adults."
Massachusetts: Live Free or There.