I walk into the living room and to my surprise my brother is jerking off to a picture of me. I'm shocked but also kinda turned on, I encourage him to continue jerking off, and then I begin to help him, I let him suck on my tits, and then he fucks me missionary on the bed I end up giving him a very yummy ride and when he's ready he cums directly into my mouth, And I savor it and swallow all of it because that's what good sisters do.