The answer to the contested question of "should a toilet paper roll face over or under when on the holder?" is answered. The answer is it should face OVER.The inventor of perforated toilet paper Seth Wheeler illustrated his new and futuristic creation with the paper going up and over the roll. I'll set the top one to roll TP forward (like the patent shows) and the bottom one to roll the TP in the opposite direction. 'Toilet Paper Roll' U.S. patent illustration (for a roll of perforated toilet paper).