This hilarious Simpsons adult t-shirt features Homer's mug with the caption " I Am So Smrt." The perfect shirt for few people we know. Makes a great gift for Dad! This red, standard fit t-shirt is composed of 100% cotton. Be sure to check out our Size Chart to get an idea of the average size and dimensions of this Simpson I Am So Smrt t-shirt style. Check back often for some of our new Simpsons clothing and other Simpsons merchandise at great prices only at Animation Shops.