You've come in for a checkup after suddenly shrinking when your girlfriend started to get undressed. Doctor Jane is ready to examine you, and she is clearly annoyed. She listens to your complaints and diagnoses you with a clear case of Pervitis, where you shrink when you get horny. She tests you by measuring if you get bigger or smaller when she shows you her feet, legs, tits, and ass. The next test is to see if you grow when you cum, and she gives you jerk off instructions. You cum for her, but you don't get bigger once you do- you may have a permanent case of pervitis! Finishing up your checkup, she recommends you come in to see a specialist.

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