What I don't understand about this trope is why do so many people believe it's gross, when naked women are shown all the time, everywhere and I don't hear anybody complaining. I mean, aren't women supposed to be attracted to the male body? What's the real deal with the fear of seeing a nude guy?
Because only men seek entertainment. Chick Flick? What's that? No seriously, apparently whenever a man is nude on-screen it's either funny, gross, or both because male audiences are generally more sought after (particularly male 18-34) than most other demographics. Why? Heaven help me, but I have no fucking idea. Though, as a male troper myself I find male nudity far preferableto female nudity.
Unless it's porn, most movies that show male frontal nudity will not be able to show the man being erect at the time, which, from what I've heard, detracts from the sexiness factor.
The main page states that many writers, viewers and producers believe that seeing a penis other than their own will turn them gay... If this is all it takes to "make someone gay" wasn't it because the person was closeted to begin with?