Anticholinergic Toxicity,”Cant see, cant pee, cant spit, cant sit ex: trihexyphenidyl June 22, 2017 mfadmin Medicine Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review. Anticholinergic Toxicity,”Cant see, cant pee, cant spit, cant sit ex: trihexyphenidyl benztropine”