UNDERGROUND

Harry Mack IYKYK

Harry Mack is a freestyle specialist: he improvises words over hip-hop beats, on the spot. He’s been doing it a long time, and it’s safe to say he’s famous. Still, a lot of people don’t know who he is.

In this two-minute clip, a bystander stops to watch, and Harry raps him right into the verse. The man’s black-and-yellow shirt turns into a Wu-Tang line. Run-DMC and Egyptian pharaohs show up too, and none of it was written down. By the end, he’s thanking a fan for the love. If you know, you know.