Joke: Doctor, Doctor, Doctor, I'm becoming invisible.

Joke: Doctor, Doctor, Doctor, everyone keeps ignoring me.

Joke: Doctor, Doctor, Doctor, I keep thinking I'm a dog. Doctor: Sit on the couch and we will talk about it.

Joke: Doctor, Doctor, Doctor, I've lost my memory. Doctor: When did this happen?

Joke: Doctor, Doctor, Doctor, I keep seeing double. Doctor: Please sit on the couch.

Joke: Doctor, Doctor, Doctor, I keep seeing an insect spinning around.