Type Seizure

When someone is typing as if they are having a seizure.

Tiffany: oMg, GuYs YoU wIlL nEvAr BeLiEvE wHaT hApPeNeD tO mE tOdAy!?!?!??!?!?!?!!

Russel: What's is wrong with you? Are you having a type seizure?