Tell her the truth

Claire freaked out. It was true that she did all that. There was nothing that she could do now. She had just **** someone and gotten pregnant from him. The biggest problem was that that someone was her own brother. What could she do? "I... I-I am so-sor... I don't k-know what.. please d-don't..." she began to plead. She didn't know what to do. She was so confused that she didn't even thought about her bodily changes anymore. "Calm down sis. I take no offense," her brother said, "also, it IS kinda my fault." Sarah looked up. What was her brother saying? "Look, there was this goddess who granted me the power to change myself or some shit. At least, when my change is related to sex. And I must have unconsciously changed my cock while asleep. And given it highly arousing phereomones. So, I'm sorry." A sex goddess? Yeah right. Her nerdy brother was talking bullshit. Except, he wasn't nerdy anymore. No, he had huge, bulging muscles. Speaking of bulge, his bulge was huge. Everything about him was so sexy. She loved it. But could it really be? "Prove it" she said, "prove it by changing my boobs back to normal" "I can't sis, I can only change myself and not others."

This was true, sadly. Mark wished that he could change others, but he knew that he couldn't. "You can't?! Then, how did I get these giant babies?" Claire heaved her chest up. "Really, I can't! Wait... There was something the goddess said about changing the abilities of my sperm..." "What? You want to say that you changed your cum so that it makes my chest grow big?" "Potentially, yeah. But to prove that, I need a test subject.." "A test subject? You don't mean... Oh no, not again. Even though you rocked my world, you are still my brother. Although you posess the sexiest cock in the world" Mark knew that all she needed now was a tiiiiny push. Something like exposing the cock. So of course, he exaggerated completly. "Is that so sis? Well then, I wish to have the perfect body for you, the form You desire the most"