A "rapper" who doesn't rap, nor rhyme at all, who famous for screaming incoherent nonsense and passing it off as "hip-hop" such as "yeah", "ok", and "what". While some of his beats might be worth a toe tap or two, he can't rap.
Teenagers and idiots in general love quoting Lil Jon, no matter and hackneyed the material maybe. See "I'm Rick James Bitch".