I don't disagree with what you're saying, though I think that only picking on social awkwardness goes too far. For the benefit of any guys who read this and feel bad about themselves, here are some other behaviours that frequently correlate with inappropriate sexual behaviour:

- playing on a sports team (I'm Canadian, so I like to pick on hockey players, but this happens in other sports as well).

- working on oil rigs.

- abusing heavy drugs.

- working in sales.

- being too smooth.

- practicing that moronic "treat girls like your sister and insult them" pick-up method.

Long story short, there are many, many indicators of inappropriate sexual behaviour.