I'm on an errand to buy a can of air, so I swing by Office Depot. Standard procedure. I pick up the can and go to check out, a nice lady ringing me up. She's doing her thing, then asks me, "You 18?" Umb, I'm over 18 if that's what you mean. "Yeah," I say. "Of course," says my face. I didn't know you had to be of age to buy air. I don't even get carded when I buy cooking wine.
Okay, so it's not actually air; it's 1,1,1,2-Tetrafluoroethane, or CH2FCF3. And I guess it makes sense to double check that kids aren't buying it...you turn the can upside down and spray a liquid stream that is colder than 100 below (F). Maybe I'll start carrying one of these around instead of mace. Anyway, people should be smart enough not to sell the things to eight-year-olds that are looking mischievous, or if they are going to have a government or company policy, they should actually check ID. Having faith in people is good, but laws that people don't take seriously are silly.