I get an erection from the grown breasts and panty shots of my super defenseless and unsuspecting younger sister who continues to be pampered by me even after becoming a high school student! When my sister found out, I thought it was dangerous and said, ``It's not like a kid like you could get an erection,'' but she got depressed and said, ``If I touch you, even a kid would be willing to do that?'' My breasts have gotten bigger too,” she said as she kissed him deeply while touching his dick! I can't hold back any longer and attacks her, violently thrusting into her over and over again.