They sort of look like torture tools - the kind used when you need spies to tell you the truth. But no, they're my crochet hooks. I crocheted in public the other day, in a coffee shop in Greenbelt specifically. And when I brought my crochet hook case out and opened it, I suddenly got dubious reactions from people around me. I can't blame them. They really look deadly.
So yeah, crocheters can be pretty deadly. You'll never know what your grandmas might be hiding in their crochet hook cases :p