My parents remarried and I suddenly got a step-sister! She's pretty defenseless at home, and I don't know where to look, so I get a hard-on! I can't stand it anymore! I asked her if I wanted to try deep throating, and she agreed! I thrust my erect cock deep into her throat, and she got so wet that she stained her pants! I shot deep into her throat, but she wouldn't let go of my cock, saying, "More, more!!"