A fork of Rural Dictionary
"One man gang" refers to a particular type of Gangsta which is independent, who relies on nobody but himself. You can be certain that any man who is a "one man gang"; can push drugs, defend himself and initiate attacks without hesitation. "Playas" considered in this category have a distinct lack of fear that allow them to carry out their plans without hesitation, a feature many envy.
Billy: "Yo, you hear what Tommy did yesterday? Marcus: "What?" Billy: "He robbed a drug dealer blind..." Marcus: "Damn that Tommy sounds like a One Man Gang"