We posted a picture of a guy with Justin Moore's autograph on his backside a few days ago -- he was in the same group as these two fans.

These two didn't have anything for Justin to sign backstage at last weekend's Watershed Festival at the Gorge Amphitheatre, so they opted for autographs on their arms. By now, if they carried through on their plans, they'll have converted Justin's signature into tattoos.

Watch for the best part of this short video at the very end ...