$18.00 Photons have mass!? Large Mug

Photons have mass!? Large Mug

Made by Shazaam! Stop the Shopping Maddess!
on August 30, 2006 at 4:15 PM

Photons have mass!? I didn't even know they were Catholic! Holy crap!... er... HOLY PROTON BATMAN! Yes, yes, its a science joke. Scientists everywhere will giggle with glee!

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