Don't be afraid, but never turn your back on Mario's famous ghost enemy! It's the officially licensed Nintendo Retro Boo Ghost Men's Tank Top that features the little round ghost, that sneaks up on Mario and his allies, in distressed print along with the text: "Boooooo!!" across the front. Just remember to look at the mischievous spirit straight on. Get some spooky Halloween Nintendo apparel, for a "1UP" in your closet!