Enforced: "We have to show that the main character isn't some pussy, so we can't have him crying."
Lampshaded: "Men aren't supposed to cry, dammit! It's not cool."
Defied: At a funeral, Bob cries, and his male friends pat him on the back and comfort him.
Deconstructed: Bob was raised with the belief that men who cry are weak and effeminate. Thanks to this, he suppresses all his emotional anguish to keep up an image in front of others. One day, it gets too much for him and he has an emotional breakdown.
Played For Laughs: Bob goes through an over-the-top sequence of trying to prevent himself from crying while being subjected to physical pain.