Periodically Bitter....

Bitterium.... its what's inside you! Sure, there's all that hydrogen and oxygen stuff... but there's also this little known element causing misery... gloominess... and that streak of bad luck you just can't shake. Its in your bones (probably hiding behind that Calcium stuff) ... just the thing for anyone who has come in #4...!

Bitterium Periodic Element design is on the front of the shirt with the Periodic Element Table and Spitefuls logo on the back