Immediately it is clear that the little redhead is into hard sex, with such do what you want, smiled her partner's luck. Shoving her dick in the anus when her friend holds two fingers is something new. Apparently the anus is well developed, if you can shove so much stuff in there at the same time. To cum in the ass, and then it all come out and then lick - I generally am amazed by fantasies, one has to try to try this.
If I found out my sister was a slut, I would have pulled her in the asshole, too. For these guys, getting their asses handed to them is commonplace. Although for the look, they break for a few minutes, but when a couple of drops of lube appear - they quickly sit down anally on the phallus. So this little sister is nice to feel like a courtesan, to show off all her skills in front of her brother, to let him cum in her ass. Every bitch dreams of being the best at it.