Drake and Kendrick Lamar have been exchanging diss tracks for the past few weeks.Prince Williams/Wireimage/Getty Images, Joseph Okpako/WireImage/Getty ImagesIn a bitter public feud, hip-hop stars Drake and Kendrick have exchanged personal slurs.Since March, the two have traded increasingly personal and aggressive diss tracks.An attorney told BI what it would take for one of them to sue for defamation successfully.After weeks of the bitter public feud between Drake and Kendrick Lamar finally looks like it's over — or at least dying down.The two rap artists' long-running beef was reignited in March with the release of Future and Metro Boomin's track "Like That," which featured a verse from Lamar that aimed at Drake and another contemporary, J.