Me and my sister are trying on blue jeans, I can't help but notice how hot her ass looks! She's got a big bubble butt! I start complimenting her on her ass and rub it. We get on the bed with our jeans on and as she is modeling them I start to kiss her, I don't know whats come over me! I know for a fact that she's never had anal sex, she probably wonders what it feels like. I ask her if she wants me to lick her ass, she says yes and pulls off her jeans keeping them down around her legs, I eat her ass while she's on her back holding her legs open for me, then i turn her to the side and shove my tongue deep inside, she moans she loves it. I spit all over her ass and ask her to go doggy for me, she starts twerking on my face and my tongue is so long im able to fuck her with it, she plunges back and forth on my tongue. Then she gets on top and squats on my face, rides it forward and reverse cow girl, opening up her legs, I take my hands and open her ass cheeks as she fucks my face as shes cumming she sits down with all her weight, my sister sitting on my face feels so amazing. I can feel droplets of cum beading down on my face as I'm eating her ass. She keeps her jeans around her calf legs and ankles exposing her juicy ass and thighs for 7 min it looks so sexy, then she takes it completely off :) .