Jonathan Mortimer Smith (born January 27, 1971), better known by his stage name Lil Jon, is an American rapper, actor and music producer who was a member of the group Lil Jon & the East Side Boyz. Lil Jon formed the group in 1997, and the group released several albums between then and 2004. Besides the group, Lil Jon has also produced many hit urban singles. He is famous for his catchphrase, "YEY-AH!".