When I peeked at my sister's friend taking a bath during her stayover, the glass door was incredibly see-through! Boobs, ass, and pubic hair were all clearly visible! Plus, I even witnessed her masturbating with the shower! Unexpectedly lucky, my dick was rock hard! But then her sister caught me, shit! I thought it was bad until she said, 'Don't tell my sister,' and grabbed my erect dick... She let me fuck her as a trade-off!
