First anal leads to a titanic sexual climax

This teeny never knew anal sex could create her cum so hard, so her first time was a real shocker. Her boyfriend was especially lustful that day and wanted to try something they've never done before. She was fearful at first, but after a deep anal penetration led to a powerful orgasm she almost begged the guy to fuck her in the booty again. What a expansive discovery for an ex anal virgin!