Sister Fucks You Next To Your Wife

You have always fooled around with your sister ever since you can remember. Fucking her in your parents house and getting sucked off behind the bike sheds at school. It has always been a big secret between the both of you... Years later and now are are both adults and you are married with a family. Even though you don't see your sister often anymore, when you do get together for family gatherings, you'll both still have a little play around in the back bedroom of the house you grew up in. Tonight, you have offered your sister a place to stay, as she has nowhere else to go right now. You are tucked up in bed next to your wife, when you are awoken by your sibling straddling you and rubbing your crotch. What the fuck?! Soon, she is riding you slowly ... quietly... right next to your unsuspecting wife! Your sister is a filthy girl and just can't control her moaning, which wakes up your wife and when she sees what is happening, she is horrified! Your sister just can't stop fucking you and has to continue until you cum inside of her... no point stopping now that the cat is already out of the bag! Your sister laughs at your wife, making her watch as she satisfies your cock in ways your wife couldn't even dream of! But wait... whats happening? Is your wife... touching herself? It can't be turning her on... can it?