South Park has the best anti-drug message ever:
"I know why drugs are bad. If you do drugs you're a hippie. And hippies suck." -- Cartman
Mr. Garrison: Let's start the day with a few new math problems -- what is five times two? Yes. Clyde?
Clyde: Twelve.
Mr. Garrison: Okay. Now let's try and get an answer from somebody who is not a complete retard.