"The normative cultural myths surrounding masculinity in contemporary American society today are as familiar to young men as they are likely foreboding. Throughout their formative years and beyond, young men are encouraged by their parents, teachers, coaches, and peers to adopt a socially constructed vision of manhood, a set of cultural beliefs that prescribe what men ought to be like: physically strong, powerful, independent, self-confident, efficacious, dominant, active, persistent, responsible, dependable, aggressive, courageous, and sexually potent. In the fantasies of many boys and men alike, a relentless competitive spirit, distant emotional detachment, and an insatiable heterosexual desire, all commonly (but not exclusively) displayed by the sexual objectification of women characterize the masculine ideal."
David Grazian. “The Girl Hunt: Urban Nightlife and the Performance of Masculinity as Collective Activity” Symbolic Interaction 30.2 (2007): 221-243.
In a nutshell.