Roman art, recently unearthed, seems filled with explicit erotic imagery. Artefacts, as seen in the picture above, like knives with handles showing couples having sex were common in Roman households. It is supposed that they were made so people would laugh to ward off an evil eye.

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http://www.nbcnews.com/id/49569288/ns/technology_and_science-science/t/trove-roman-art-erotica-unearthed-britain/#.U4cMyfmSySo

Obsessed with sex: It seems that sex is an age old theme amongst artists. It constantly breeds in new ways and manifests itself all through the Middle Ages, the Renaissance and even Contemporary art.

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