Peanut butter ball

This is a funny one from a colleague:

My friend was going to see a patient and happened to arrive just as the patient began to have a generalized seizure. My friend did the appropriate things for a seizure like rolling the patient on his side and just allowing him to seize without hurting himself. But the seizure kept going, and all the while the patient's wife is becoming more frantic. My friend calls for the nurse, and the patient's wife begins shouting, "he just needs his peanut butter ball! He needs his peanut butter ball!"
"He needs his what?"
"His peanut butter ball. That's what he takes to stop his seizures."
It took a moment, but my friend finally realized that she meant phenobarbital, not peanut butter ball.

Patient mispronunciations of medical words are often funny, but that's one of the funniest I've heard. I'm sure there will be many more now that I'm in Alabama.