file under "diseases I'm glad I don't have":

Primary reading epilepsy consists of seizures triggered by reading, without spontaneous seizures. Seizures usually begin in adolescence, and onset is unusual in younger children or adults over 30 years of age. Patients report jaw jerking or clicking while reading, often with jerks of the arms, and if reading continues, a generalized convulsion may occur. Transient cognitive impairment and speech arrest has also been noted with the jerks.

That would suck. A lot.