Hallucinations

A man, suffering from hallucinations, went to a doctor. "What's the matter with you?" asked the doctor.

"There's nothing the matter with me, Doc, except when I walk along I see little babies six feet tall. And big men with all kinds of hats on 'em."

"Have you got any brother and sisters?"

"Just a brother."

"Is he normal?"

"Yeah, he's normal, except that he's got a big hunk of rhubarb sticking out of his head."

"Your brother has a big hunk of rhubarb growing out of his head?"

"Yeah."

"That's too bad."

"You bet it's too bad. He planted celery."