That girl in my class is a Rina! She's a sexually frustrated high school girl who won't let any guy cum until she's satisfied and cums over and over again! When I was about to cum, she got mad at me and said, "Why can't you hold it in? I'm telling you to make me cum!" She continued thrusting while saying, "You can't cum yet!", so I ended up cumming unexpectedly. But because I held it in, it was a really satisfying cumshot...