Nerdy Periodic Table Black T-Shirt

Nitrogen, erbium, and dysprosium: put them together and what do you get? How the heck should we know? What we do know is that their elemental symbols conveniently spell out "NErDy" in a, well, nerdy periodic table graphic. Printed in white on 100% cotton, every true geek needs this sulpher-hydrogen-iridium-tyberium.