I’ve snuck knives through security multiple times, and it has always been an accident. I’ll usually get through security and then as I’m putting everything back in my pockets, I realize that there is a keychain knife on my keys, or that I forgot about a folding blade in my wallet.

I work in an industry where I sometimes have to cut a lot of rope. And I don’t want to waste time tracking down a knife every time I need one. So I’m in the habit of always keeping a knife (honestly, multiple knives) somewhere on my person. Even if I left my regular knife, and my multitool, and my keys (with my keychain knife) at my desk, I still probably have a knife somewhere weird like in my wallet. But that means I also have a bunch of random blades that I tend to forget about until I actively need them.

I had an Indian friend who flew from Florida home to Bombay, via Heathrow and New Delhi. As he was waiting there for his luggage he glanced down at his shirt pocket and noticed part of a joint sticking out.

The TSA has like a 30% track record of noticing my wife forgot to take the pepper spray off her keys