That underwear is new to me. Would sell well at MSX fairs? :-)
MS of this MSX means Micheal Strahan, a NFL star player belonged to N.Y. Giants. J. C. Penny launched their own fashion brand "MSX" with cooperation of his. This photo is a joke gift from my American friend whom I sent Draconic Throne ROM cartridge to. You can see the ROM package displayed alongside MSX underwears in the photo.