Personalized Wicked Mummy Evil Smile Youth T-Shirt. Wicked Mummy Skull - WICKED Evil With A Smile. WickedApparel Designs by WickedSkulls Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.