My sister, a schoolgirl, was sleeping with her panties pulled down, exposing her cute little panty-clad bottom. Seeing this, my aroused brother couldn't resist grabbing his hardening penis and starting to masturbate. However, he got caught too quickly, and she accused him of being perverted. Despite her initial annoyance, she eventually felt sorry for him and offered to help him cum... but he just couldn't manage it!
