What’s beef? Hip-hop surely knows. In a culture where braggadocio infiltrates the music, egos are bound to fly, and that’s when problems arise. It’s a natural response to have a little competition in an art form. However, when it comes to hip-hop, a face-off usually turns into a high-profile event. While most beefs remain on wax, others don't. It’s the gift and the curse of hip-hop, really. Feuds can sometimes inspire the strongest of lyrics, but they can also result in unnecessary violence. Take a look at some notorious battles in hip-hop history, brought to you by TheDrop.fm. Some have been cited over the years, while others are brand new. The cycle continues.