Epilectic seizures

An epileptic seizure (colloquially a fit) is a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.[1] The outward effect can vary from uncontrolled jerking movement (tonic-clonic seizure) to as subtle as a momentary loss of awareness (absence seizure). The disease of the brain characterized by an enduring predisposition to generate epileptic seizures is called epilepsy,[1][2] but seizures can also occur in people who do not have epilepsy. Additionally, there are a number of conditions that look like epileptic seizures but are not.

This is also what you'd get if you watched this show way too much.