Jimmy Fallon and Justin Timberlake added yet another chapter to their now-famous "History of Rap" series on The Tonight Show Wednesday night, giving props to everyone from O.G.s such as LL Cool J, Slick Rick and Salt-N-Pepa, to the current crop of stars including Drake, Kendrick Lamar and Fetty Wap. Keep 'em comin', guys!

 

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