my sister

Doctor Doctor I feel like a racehorse.

Take one of these every 4 laps! 

Doctor, doctor my sister here keeps thinking she's invisible!

What sister? 

Doctor, Doctor I'm on a diet and it's making me irritable. Yesterday I bit someones ear off.

Oh dear, that's a lot of calories! 

Doctor, Doctor Can I have second opinion?

Of course, come back tomorrow! 

Doctor, Doctor you have to help me out!

Certainly, which way did you come in? 

Doctor, Doctor I keep thinking I'm God

When did this start?

Well first I created the sun, then the earth... 

Doctor, Doctor I keep thinking I’m invisible

Who said that?