Wanna Bet?
Added 2023-01-16 10:23:09 +0000 UTCMy sister and I started holding wagers when we were really young. It started out innocently enough: I bet that I can hold my breath for a minute, I bet you can't eat that entire pizza. As we grew older, our wagers grew more adult as well. It quickly became clear to me what kind of girl my sister was growing into when she bet that I wouldn't sexually assault her in her sleep, and our perversions grew only more extreme from then on. Today, I bet that she wouldn't dare masturbate in public. I didn't even ask her to take all her clothes off, but she did it anyway. I watched in awe as she furiously pumped her large green dildo into her slender body. After her first orgasm she rested for a while to collect her breath, then immediately continued. She didn't even notice when I walked back to my car and drove away, stranding her without clothes and without any means of communication. We hadn't discussed it beforehand, but being forced to walk back home naked seemed like a fitting reward for winning the bet.
