Yes it can, so can a pencil. Years ago, way before the "tactical pen craze," there was a patent applied for, for rubber bodied pens that prisoners could not assault staff and other prisoners with. The use of a pen as a weapon has been around for a long, long time. Tak Kubota, inventor of the Kubotan, his first idea was "pen fighting." Using a pen. He couldn't find a good enough pen so he invented the Kubotan which is just a minimized Yawara. Further, a fan of his at Maglite designed the Mini-Maglite to be used as a Kubotan flashlight. Kubotans were banned by the FAA for YEARS when you could still carry a folding knife onboard if it was non-serrated and under four inch blade length. Really? It might surprise you to learn that the first TSA Screeners were all holdovers from all of the private security companies that worked in the airport for years. They basically made low-wage, no benefit morons into Feds with the stroke of a pen. All of them that then wanted to be a pseudofed (pardon the pun, it was fully intended) and get much better pay and bennies just had to pass another background check. Voila! A workforce was created.