POV: i am standing in a towel, passing my younger sister who is living with us and is coming in to use our shower after i have just finished taking one myself. after we see she has gone into the bathroom, i point out how the towel slit revealed her ass and that is caught you (my husband) staring and noticed that you now have a boner. i ask if that is what you want, two sisters, fucking together? what would you like more: just watching two sisters get all on each other or having the sister join in a three-way.. i gasp and laugh. you want us to first get it on with each other and then join us in a three-way. i give a mischievous look and then say, our anniversary is coming up lets see if we can make that happen.... i drop my towel and start showing off my body and playing with myself talking as if i was showing you how we would play with each other in front of you. when i am fingering myself, i talk about how j can just imagine this is my younger sisters pussy and I am sure it would taste so good and then i switch to how great it feels to have my sister fingering me right now. lots of talk about doing each other and how nasty and wrong that is but how much i love thinking about it. Then i do the same with fingering my ass. i finger my ass in a few different positions. you love seeing my ass and to see my asshole opened up as much as i can. i talk about her tasting my ass juices and me tasting hers. next, i bring your cock ( the dildo ) in and pretend to share a BJ before you blow a giant load all over my face. afterwards with the cum still on my face, we do some more playing around, i tease you some more, i jiggle my body a little, i show my ass while standing and do some ass clenches. last, i bring the dildo back in and have you fuck me while pretending you are fucking both me and the sister, i talk a lot about it before you blow the cum all over my pussy and belly and pretend asking my sister to cum eat my husbands cum our of my pussy...