You bring the pizza, Fright-Rags will bring the horror movies! SLUMBER PARTY MASSACRE 1 & 2, MY BLOODY VALENTINE 3D, and Bela Lugosi merchandise is now being served fresh. Fright-Rags drills into SLUMBER PARTY MASSACRE 1 & 2 for killer apparel. The collection includes three designs from 1982 slasher,…