Illegal Toilet - I think the real cause of your worry is that you think of yourself as less of a man, and then you look for external criteria and wonder if they make you less of a man - they don't, see the norwegianwoman's answer for example - but that you worry whether you are enough of a man - THAT can make you less of a secure, self-assured person.

In other words, that you asked this question is a symptom of something, and that something needs to be addressed, and not sexual positions.