Chubby man penetrates me in the bedroom and punishes my ass with a chastity cage before someone arrives

A few minutes ago, I was chatting with a guy in my room when he suddenly dropped his pants and started penetrating me. I didn't expect anything like this, but I let him continue. After a while, he put a chastity cage on my ass and told me not to move. I had to stay still until someone came. This guy has a huge cock and he fucks hard. I guess he must be an amateur, but he knows how to handle his business. He fucked me doggystyle and from behind, making my ass red and sweaty. I hope no one saw us, because I don't want my family to find out what I've been doing.