Caught my little stepbrother jerking off with my panties!

I really would have never thought that he would do that! Since a while I have my family visting and my stepbrother is also staying with me. And when I was taking a shower earlier, he must have sneaked into my room and gotten a hold of my panties! But I guess he didn't expect me to come out of the bathroom so quickly and so I caught him red handed jacking off with my panties! I can't believe it!! And then he goes on babbling that he has had this fantasy for a long time, what a pervert! He's really lucky that I'm so horny at the moment and can't resist a nice hard cock! And if he's having fun with my panties, I want to have some fun now, too!