Your doctor called you for a medical exam. She claims that she needs to check your fetish, which is about tummys and belly buttons. She's obviously excited for this, poorly trying to hide it. She even creates a new word "Cumtummyitis" (Cum in my tummy + itis) to give you the subliminal message to cum in her belly. She gives you a blow job and handjob and you cover her body in your cum.