They may not be kids anymore, but some rivalries never grow up! Johnny Lawrence may have hit rock bottom after the 1984 All Valley Karate Tournament, but things are looking up for him with his new Cobra Kai dojo and this officially licensed Sony Cobra Kai Strike First Mantra Men's Graphic T-Shirt! The Cobra Kai mantra "Strike First. Strike Hard. No Mercy Sir" is printed in yellow below the dojo cobra mascot on this men's tee.