The Sex-Ed class you never got in school! Why do men tend to wake up with "morning wood"? We look at the hard facts and some of the biology of an erection, to discover the mechanism behind this phenomenon.
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Promoting this video and sending it back into the queue for one more try; last queued Wednesday, November 14th, 2012 6:23am PST - promote requested by Boise_Lib.

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