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Ritalout is a fake drug that negates the effects of Ritalin.
In the Season Four episode, "Timmy 2000", a majority of the children are diagnosed with ADD and are prescribed Ritalin. However they overdose on it, becoming boring and dull enough to go and see a Phil Collins concert. While there, Chef and the doctors put Ritalout in the lemonade that everyone drinks, making them normal again.
- Ritalout is a joke on the fact that the opposite of 'in' is 'out', so Ritalout should negate the effects of Ritalin.
- There is one scene in which the letters on the Ritalout bottle are visible, revealing that the drug is actually MDMA, a euphoric empathogen and the primary ingredient in the street drug ecstasy.