Copropraxia is a tic consisting of involuntarily performing obscene or forbidden gestures, or inappropriate touching. Copropraxia comes from the Greek κόπρος meaning "feces" and πράξις meaning "action". Copropraxia is a rare characteristic of Tourette syndrome.
Related terms are coprolalia, referring to involuntary usage of profane words, and coprographia, making vulgar writings or drawings.
References
Copropraxia Wikipedia(Text) CC BY-SA