Sweet Dee's Dating a Retarded Person

Dee's new boyfriend, Lil' Kev, is a local rap celebrity. He's also retarded, according to Dennis. Mac figures that if a retarded person can become a famous musician, what's stopping them from doing the same thing? He, Charlie, and Frank form their own band in hopes of becoming local celebrities, though creative differences could disarray the band's state of cohesion. Meanwhile, Dee tries to figure out her boyfriend's state of mind.