My wife recently returned from Sebu, Phillippines, and I had asked her to try to find me a balisong. Well, it's the same style, but when opened out, the thing she bought is the size of a small broadsword!!?!! Along with the FIVE other blades she bought me (only 2 of which are at all practical) including a "samurai sword", on arrival at the airport, Sebu security (my husband collects them !?##!) duct taped the sword and the small case containing 5 assorted blades, and slapped "security" stickers on everything, which meant when Cairo customs saw the stickers, she was waved straight through...
Some years ago, returning to the UK from Nigeria, we had checked in at Murtallah Mohammed airport, when I remembered my 2yr-old son had a silver plastic "Highway Patrol" .38 revolver somewhere about his person. When asked, he pulled it out his waistband and handed it to me. On proffering said toy to the man behind the counter, he instantly hit the floor, and the "security" guy about 12 feet away, ran off down the corrider with his Uzi still slung over his shoulder.......
Just my 10p worth.