I was trained in how to use the balisong. I got pretty good at it.
It all stopped the day the person who was training me went psycho when I innocently picked his up without asking first. He tackled me, threw me to the ground, pinned me down, then with his psycho, angry, vacant eyes said, "Don't you EVER touch Julie again!". Yep, he had named his knife Julie. PSYCHOOOO!!!!!
it's not that hard really, till you grab the wrong side.