Balisong is an actual town in the same dialect region where I live, about 2 Provinces South. I flipped my first butterfly knife which was from my American grandma's vanity drawer. She was shocked I knew how. I learned it with the boy scouts, I told her. "I confiscated that from your dad!" she said. I never saw it again since. I bought my own at market when I was in 7th grade. I'm overdue for an immersion at Balisong. Sharing this link here I hope it's accessible. https://www.facebook.com/share/v/UZ6v4uTtAtGtLBTh/?mibextid=xfxF2i