I had to buy a can of compressed air the other day. I wasn’t surprised when they asked me for ID, since I’ve kind of gotten used to that sort of thing. But then I put “I was asked for ID” together with “I was buying air.” Obviously they’re trying to prevent teenagers from getting that sort of stuff and inhaling it as a drug. But now I’m finding myself imagining a bunch of drugged-up air-heads saying things like “Hey guys, let’s go ‘air it out'” or “Dude, you got some serious air on that one.”