South Park - Season 4 - Eps 3: Timmy 2000
There's something wrong with new student Timmy. About the only thing Timmy can do is say his name. Ignorant of the fact that Timmy is "retarded", he is "diagnosed" with ADD, which relieves him of the responsibility to do any homework. Soon the rest of the class manages to get diagnosed with ADD, and all get prescribed Ritalin. Everyone is on Ritalin and just complacent enough to sit through a Phil Collins show.
About South Park

Title: South Park
First Air Date: 1997-08-13
Last Air Date: 2023-03-29
Status: Returning Series
Rating: 8.37/10 (from 4508 votes)
Language: EN
Seasons: 28
Total Episodes: 322
Network: Comedy Central
Genres: Animation, Comedy
Production Companies: South Park Studios, Comedy Central, Parker-Stone Productions, MTV Entertainment Studios
Synopsis
Follows the misadventures of four irreverent grade-schoolers in the quiet, dysfunctional town of South Park, Colorado.
Cast

Trey Parker
Eric Cartman / Stan Marsh (voice)

Matt Stone
Kyle Broflovski / Kenny McCormick (voice)

Mona Marshall
Sheila Broflovski (voice)

Jennifer Howell
Bebe Stevens (voice)