My wife left on a trip with her friends, but I didn't realize it and my sister-in-law came over. Feeling awkward, I didn't want to send her away, so I decided to have dinner and drink together. As she drank, her demeanor loosened up and she started flirting with me in a way I found irresistible. Giving in to her weak resistance, I customized her mouth and pussy, fucking her repeatedly until I was completely satisfied—long before my wife returned home.