M37@1 Share definition Flag metal. only metal and some hardcore metal kids can use it. chelsie: we're so M37@1! stephanie: yah, M37@1!!!! M37@1 by stephaniee isasdjkl;fhfwibvgvbjds? November 15, 2007 0 0 Get merch Get the M37@1 mug. Buy Now — $32.95 See more merch