Four little ghosts, four scary math tools. One's got a compass, one's clutching a calculator, one's wielding a protractor like a weapon, and the last is haunted by a rising stock chart. Turns out the real horror isn't ghosts, it's geometry. Great for the math teacher who's seen it all, the student who still counts on fingers, or anyone who thinks numbers are spookier than any haunted house. Wear it to school, to work, or just to confuse people who ask what's funny about calculators. Printed on the Gildan 18500 hoodie: heavy-blend fleece with a double-lined hood and a front pouch pocket.