My stepsister, born from my parent's remarriage, is incredibly cute but a bit timid and has a masochistic streak. She's extremely erotic too! She's very careless, often flashing or showing her nipples, making it hard for me to know where to look, and I end up getting an erection every day. So, I finally mustered the courage to ask if she wanted to 'give head', and surprisingly, she agreed! While practicing deep-throat hardcore piston action with my stepsister's mouth, my underwear got soaked through! The moment I finished ejaculating down her throat, this slutty girl transformed and wouldn't let go of my dick, demanding 'More!'
