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Topic: Porn Anthropology

Porn Anthropology is a new series which we explain the science behind some of pornography’s most popular conventions.

(iStockphoto/ <a href='http://www.shutterstock.com/pic.mhtml?id=39251350'>LIGHTWORK</a> via <a href='http://www.shutterstock.com/'>Shutterstock</a>)

Explaining the "money shot"

Tracy Clark-Flory