I was surprised to find out that my little sister, who has always been serious and studied since she was little, is actually a slutty high school girl who loves sex! We started chatting and somehow the conversation turned to sex, creating a strange atmosphere... Just when I thought it was awkward, my little sister reacted to the sex talk and wanted to do it! When I told her, "You'll never get me hard," she got stubborn and tried to make me get an erection at all costs, taking off my pants and giving me a turtle-like blowjob that wouldn't let go once she got in her mouth! She wouldn't let go until I got an erection and said, "Let's have sex!"