Then you notice other changes. It is not just your penis that is shrinking! The rest is following suit too! Your pubic hair recedes back into your skin and your scrotum retracts into your skin. Your two testicles lose their adult shapes and become a simple sack. A hairless puny scrotum that will have to wait a very long time until its function is back in use. It's clearly far from its adolescence form and far from being of any reproductive use. Seeing your manhood becoming a boyhood, and a very tiny one at that, you shriek in horror.
"My manhood!" you yell in absolute terror.
Tarzan just smiles as he watches the transformation unfold. The changes then spread to the rest of your body. Your body hair obeys the same logic as your pubes as you see them retreat into your skin, which become a whole lot softer. Your hands and feet become more slender, thinner and afterwards pudgy. Your muscles melt and then get replaced by fat. Baby fat, you understand, as the world starts to get much, much bigger. Your shouts changed into pitiful cries and wails as your thrust upon your back, stuck on the floor. A baby! You're a baby! A helpless baby! Why did Tarzan do that to you? You're now a weak baby and on the nude, showing off everything as you move feebly. You're a human again, yes, but a feeble little kid! You cannot even stop yourself from crying! And through your tears, you see the ape-man crouching down to peer at you better, a wide smile upon his face.