For a "man" which is almost 100% of the time a black man he is real tough looking and always faces down someone. Always has his pants pulled up. This is man prison yard swagg.
For a woman which is almost 100% of the time a white guy and is being used for sex by the black man he almost always has his head down and his pants hang low on his rear to let the black men know he is ready for them or that his cellmate master is renting him out. This is female prison yard swagg.