'The HuffPost Show' Explains: The Rise Of Ass Play (NSFW)

Tossing salad, backdoor action, rim job, anal, taking a trip to brown town... whatever you call it, ass play is certainly having a cultural moment. Whether on "Girls", "The Mindy Project", or even as the subject of a Harvard course , butt play popped up everywhere in the last year. So how did we come to this ass-centric state of affairs? "The HuffPost Show" presents the official explainer on the rise of ass play.