This happened a while ago; so maybe they've made it out of rehab. But, if you follow Shaggy and Scooby-Doo you have to love it. We just knew Shaggy was a pot head from the get go and Scooby-Doo fried his brain on something years ago. As was reported by the Post-Gazette about the Cartoon Network's series "Harvey Birdman, Attorney at Law.":

Fred, Velma, and Daphne call on Harvey Birdman when