My sister came home soaking wet with her friends after a sudden heavy rain. My sister's friends had to take shelter from the rain until it stopped, but I couldn't resist the sight of the 10 girls in their rain-soaked, see-through uniforms and got an erection. Then, the girls noticed my erection and started touching my dick without my sister's knowledge. I ejaculated because it felt so good, but when they saw my cock still erect, they got on top of me and took my virginity...