This game continues when Dee takes Dennis with her to her boyfriend's house.
When she discovers that Kevin still lives with his mother, it doesn't help his case for "normal." Dennis inflates his score very quickly which frustrates Dee to no end.
"Sweet Dee's Dating a Retarded Person" is the ninth episode of the third season of It's Always Sunny in Philadelphia.
Dee begins dating an amateur rapper who Dennis thinks is mentally retarded.
To break the silence, Dee introduces Dennis as their ride to the studio.
Meanwhile, Dennis shows Dee his elementary school year book where "Special K" appears to be drooling all over himself in his picture.When he leaves for the recording studio, Dennis informs Dee that her boyfriend—real name Kevin Gallagher—is retarded.He remembers Kevin attended special needs classes in elementary school. Now, with Dee on a mission to prove her brother wrong, Mac has a pitch for the gang.Meanwhile, Frank, Charlie, and Mac start their own band but can't agree on what type of music they should play.PM on a Wednesday Dee introduces The Gang to her new boyfriend—an up-and-coming rapper named Lil' Kevin.She stares at him while he laughs loudly and disjointedly at the ensuing childish action on screen.