The definition of what makes a man a man is anything but clear in today's culture. Is it simply possessing a y-chromosome and and a rather vulnerable body part in the pelvic region? Is it being super-ripped and sleeping with as many women as you can get? Is it being sensitive and open enough to talk about your feelings? Is it making money and gaining power? Is it drinking beer A instead of beer B? I'm here to offer my observation on the single defining trait that separates the real men from the overgrown boys: Dependability.