Coprographia is involuntarily making vulgar writings or drawings. The word comes from the Greek (), meaning "

feces Feces (also known as faeces American and British English spelling differences#ae and oe, or fæces; : faex) are the solid or semi-solid remains of food that was not digested in the small intestine, and has been broken down by bacteria in the ...

", and (), meaning "writing". Related terms are

coprolalia Coprolalia ( ) is involuntary swearing or the involuntary utterance of obscene words or socially inappropriate and derogatory remarks. The word comes from the Ancient Greek language, Greek (), meaning "dung, feces", and () "speech", from () "to ...

, the involuntary usage of obscene and/or profane words,Coprolalia.
Dictionary.com, Accessed 21 November 2006. and copropraxia, the involuntary performance of obscene gestures.Schapiro NA. "Dude, you don't have Tourette's": Tourette's syndrome, beyond the tics. ''Pediatr Nurs.'' 2002 May-Jun;28(3):243-6, 249-53. It should not be confused with the behavior of smearing ''actual'' feces, which is called scatolia.

References

Symptoms and signs: Nervous system Tourette syndrome {{symptom-stub