Quote - I know on one TV show there were some men in a
swimming pool, and they pixilated out the gay man's nipples, but didn't pixilate out
the nipples of the straight men.  So I think this should apply at Renderosity too.
No gay man nipples.

As Poser doesn't render skin hair unless you try with dynamic hair,  you are not able to say if the rendered nipple belongs to a man, gay or shemale, so male nipples must not be allowed.
Even you don't need to go so far with the gay "sinners", some men are hairy as gorilla and other haven't a single bit of hair and no beard at all!!!!

Stupidity also evolves!