This how it goes down in the jungle
Where niggas learn to shoot before they could rumble
http://rapgenius.com/Meek-mill-tupac-back-lyrics#note-274232 In both lines meek is referring to Philadelphia as not so much as a nice city, but actually a vicious War Zone.
Meek mill is also stating what michael moore did in bowling for columbine, people in the United States are very familiar on how to use a firearm and have never even thought about fighting with their fists, like men should, but men wont.
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