By Sadao Turner

Capping off his first week on “The Tonight Show,” Jimmy Fallon rekindled his bromance with Justin Timberlake on Friday night to unveil the fifth installment of their wildly popular “History of Rap” series.

Backed by The Roots, the boys covered a little old school with The Beastie Boys and Biggie Smalls and new school with songs from Kanye West and Kendrick Lamar.  The strictly-plutonic duo also reminisced about their Christmas episode of “SNL”—peep it below.