There was this guy in the mental institute who was taking his medicine that the nurse gave him.
The same nurse was walking past his room and saw him shaking very vigorously.
Intrigued, the nurse asked,”Dear patient, why are you shaking? Are you cold?”
Still shaking, the patient replied, “No, my dear nurse, the bottle of medicine you gave me said ‘shake before drinking’ but I forgot to shake!”
“Oh dear.”