Everybody who knows about pornography (we're looking at you) knows that some of the best stuff lies in fitness and workout videos. It's not a stretch to imagine footage featuring glistening, chiseled bodies being screened simply "for educational purposes."

So when does a fitness product become less about sculpting and toning muscles and more about helping someone get off? While the Shake Weight is branded as a tool meant to help "strengthen the bicep, tricep, shoulders, and chest," this demonstration video is almost definitely meant to strengthen the boner.

If this isn't porn, then we've just been watching Denise Austin, er, ... for the moves. Yeah, that's it -- the moves. Keep reading to watch the video and let us know what you think.