Your Naughty Sister in law

You are having an affair with your Sister in law and you've come up with the perfect plan to have her stay with you all week for a fuckathon whilst your wife is at work. She arrives whilst your wife is in and makes herself at home. She can't wait to have your cock to herself and when your wife leaves the room to get ready for work, she immediately gets on her knees, sucking and stroking you whilst having a conversation with her sister in the next room! She manages to milk your cock just in time but it was a close call and you were so close to being caught out! Luckily, your wife leaves for her shift so you have the place to yourself, now you can REALLY have some fun!