Rapper extraordanaire Kendrick Lamar had some fun in England recently while promoting Reebok. Attending a Hip Hop workshop for 40 young musicians in Manchester, the Compton MC was sucked into an impromptu battle with a lucky guy.

Kendrick?s got reason to be all smiles. His surprise 8-track album, untitled unmastered, debuted at #1 on the Billboard 200 this week.