Jason L. Martin (born May 8, 1987), better known by his stage name Problem, is an American rapper, songwriter and record producer. He has released nineteen mixtapes in his career. His debut EP, Understand Me, was released on December 10, 2013. He is best known for his single "Like Whaaat" and for featuring on E-40's "Function". Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.