
Below his slowly growing member, she could see Robert's scrotum (she briefly felt pleased with herself for remembering) with his testicles inside. Though not as large as her father's, she still thought they and his penis looked pretty big, particularly since he was only a little more than a year older than she was.
She somehow found it a relief that Robert's pubic hair wasn't all that much more developed than her own, being a little bit thicker and covering only a little more area.
Blushing furiously as it happened, Robert wished that he could just fall into a hole and never be seen again as he felt his cock getting longer and harder. The last thing he needed or wanted was for his sister or his MOM to see him with a hard-on! But there didn't seem to be a damn thing he could do about it, even though he could usually distract himself by thinking about other things instead of his growing penis. He wished mightily that he'd never raised his eyes from the floor and looked at his naked mother and sister: both of them were better looking than he'd figured, and were right there with him; once he looked at real, live naked females… well, that was it.
His discomfiture was only worsened when one of the other men laughed and said "Hey, check it out… junior's getting a woody!"
