Stepbro exposes his genitals and forces them into stepsister's mouth, catching her off guard

In a recent video, my stepbro came over to my house and we started to chat. Suddenly, he got a little excited and started exposing his genitals. I was completely taken aback and didn't know what to do. He then proceeded to force his penis into my mouth, which was a complete shock to me. I tried to push him away, but he wouldn't listen. He continued to push his penis into my mouth, causing me to choke on it. I was so surprised and upset by this unexpected encounter that I couldn't even speak. I had never experienced anything like this before and I didn't know how to react. He kept forcing his penis into my mouth, making it difficult for me to breathe. I was completely overwhelmed and didn't know what to do.