I Can't Legally Buy Highlighters

Does anyone out there play Diablo? I've thought about buying it for some time, and so today I decided to finally buy the Diablo Battle Chest. I went into Wal-mart, picked up a copy, and went to pay for it. Then the trouble started. Diablo is rated “M” because it contains “Animated Blood and Gore”. When I pulled out my wallet, I was immediately asked for an ID to prove that I was over 18. This was, shall we say, problematic, because I never bothered getting a driver's license. And no, apparently they don't accept college IDs. Because without a driver's license, I could just be a fifteen year old. A six foot tall fifteen year old with my picture on a college ID. The only two IDs they accept are driver's licenses and non-driver ID things that are issued by the DMV. I ended getting Diablo anyway, though. Take that, Wal-mart!

But games that are rated “M” aren't the only thing you can't buy when they think you're under 18. And no, I'm not talking about alcoholic beverages. The cashier told me about how teenagers would buy white out, highlighters, and other office products, and smell them until they got high. As a result, the sale of white out and highlighters are restricted. Because in the eyes of the law, playing a computer game is the same thing as sniffing glue. And on top of all that, the sales tax was 8%.

So what I really want to know is who comes up with this stuff? Is this a state law or a federal law? Who do I go to to complain? Why am I paying taxes on things I can't buy? And since when does Wal-mart carry good computer games?