The state of Colorado has had a problem with sign theft, and not just any sign, but the sign on the highway that reads: Mile 420.

You might ask yourself what is the significance of such a sign. Well, given the recent law changes in Colorado concerning Marijuana, it's no wonder it keeps disappearing. You see, 420 is the pot user's symbol for smoking dope at 4:20pm.

I've no doubt that other state's have the same problem, but what Colorado does to remedy the situation is genius.