Teach Me, Nian'er [M]

No, no, impossible. T–There was no way he could take that gigantic shaft inside him! It defied all logic and reason! Shen Nianzu couldn't help but curse again and again in his head. Was it too late for him to back out now?

And for God's sake, what had Jin Jiuchi eaten to grow so big?!

Jin Jiuchi, on the other hand, grew increasingly antsy the longer Shen Nianzu remained silent. Oblivious to the myriad of shock and apprehension raging in the jade doll's mind, he was solely focused on the meager space between them, zeroing in on Shen Nianzu's plush lips that quivered with every breath. 

Shen Nianzu might not realize it himself, but Jin Jiuchi had been feeling the ghost of his exhales caressing his sensitive manhood for a while now. And it made him grow impossibly hard, so hard that he had to bite his cheek and will himself not to come right here and there.