Every day, I'm tormented by the troubling, defenseless panty flashes of my four older sisters, causing me to wake up with an erection. My sisters come to check on my morning erection. I've even seen them tease my virgin friends by showing them panty flashes, making them get erections, and I became envious. When my erection touched my sister's butt and I thought I'd be scolded, instead, she gently held my erection and secretly let me insert it, without my mother or other sisters knowing!
