I'd nursed a foot callus for years that hurt badly when I walked barefoot. Weeks ago, sitting on the locker room bench, I hit my limit. In desperation I pulled out my pocket knife to do some field surgery. A few minutes into it I glanced up to see two guys sitting across the room staring at me open-eyed as I dug into my foot with the tip of that pointy knife (8.5" with 3.5" blade)! I just smiled and dug that sucker out.

Should have gone after that callus a year ago! Amazing how such a tiny thing can aggravate.

But you're right about a knife alarming people. Years ago in another life I opened a similar knife to cut a cable and my boss literally jumped backward and exclaimed in fear. But he came from a place where, when someone pulls out a knife someone else usually gets stabbed.