In some settings, it is taken as a given not only that
All Men Are Perverts who think about sex constantly, but that the average man will immediately attempt to force himself upon any woman who isn't sufficiently protected. Simply
not raping a woman is therefore in itself a sign that a man is a pure and noble hero.
Particularly common in
Low Fantasy settings whose writers are trying too hard to avert
Politically Correct History or Anvilicious
Straw Feminist works. Also often goes hand-in-hand with a
Sweet Polly Oliver heroine, as this is the only way a woman can leave her home in one of these stories without being set upon. Strangely,
men are rarely seen as targets for this rampaging rape culture, except in
prison movies where it's likely to be used as
comic relief.
Also shows up in old-fashioned
romance novels, perhaps as an attempt to demonstrate the desirability of the heroine. In some of these, the only one who will
succeed in raping the heroine will be the hero!
See also
I'm a Man, I Can't Help It. Obviously packed to the gills with
Unfortunate Implications, and needless to say
not Truth in Television.