The Tourette's Tolerance and Understanding Foundation is a support group for people with Tourette's Syndrome, which was seen in the Season Eleven episode "Le Petit Tourette".

The South Park branch of the organization is run by a man called Mr. Donaldson. He took Kyle Broflovski to the organization to meet and talk to people with Tourette's after Kyle protested that Cartman was faking having the condition. There, Kyle met several other afflicted children, as well as Thomas, who later helped him expose Cartman's charade.

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