Something awful and disdainful, horrific and sad. What makes puppies die and devil salute. When a real man cries it is only because something truly horrible has happened, like a death in a family, betrayal, death of a close friend, awful fight with the woman he loves (if she hurt him) and death of millions. Contrary to popular belief real man does cry, sometimes even in public (as he is not afraid to show that he cares).
When Roger saw the village burn to the ground, little tear slid down his cheek. That sight makes even a real man cry.