Favorite sister in law

A couple months ago my sister in law over indulged while we were all out drinking, My wife and my brother in law were both asleep and I got up to go for a **, When I opened the bathroom door my sister in law was on the bathroom floor sitting on her knees with her feet folded under her ** wearing nothing but a tiny little thong.
I said "sorry" and went to walk out but she never responded so I turned back and looked at her, I called her name and she never looked at me so I walked up and leaned over her. She was sleeping in just a thong with er head resting on the toilet seat, She is older than me by 10 years but at 38 she still turns a few heads. She is short and has the whole soccer mom look, With clothes on she is a real nice looking woman, With the clothes off she looks more like you would expect a mom of 3 to look, A little thick in the legs with a little cellulite but overall not bad and an amazing **, I have seen her in bikinis and stuff and she has always had a great **, Little bit of a soft tummy the way she was sitting and small saggy ** with silver dollar sized, Dark pink areolae and ** about the size of a pencil eraser which were rock hard since it was a bit chilly in the bathroom.
I know it was wrong but I knelt beside her and looked at her ** hanging there, Small and saggy and a bit wrinkly with her hard "Braille" nips and I reached out touching one, I lifted it and squeezed it. Her ** are super soft and squishy but those nips...I played with her ** for a couple mins and then slid my hand down her back and cupped her ** cheek, Firm, Round and soft all at the same time. I slid my hand in her thong which wasn't covering anything anyway and slid my hand all the way down between her legs which was perfect with her sitting on her feet and her knees spread I could feel she was shaved bald and her ** was warm and already wet.
I slid a ** in her and she just sat there so I started sliding it in and out of her then pressed my thumb against her little ** hole which is very nice, Pink and super tight.
I moved around behind her and slid up behind her and the way she was sitting sticking her ** out I was able to slide her thong to the side and slip my ** between her heels pressing the tip against her puffy, Pink ** lips, I was rubbing the tip back and forth on her already wet ** and pressed forward sliding it right into her, I pressed forward forcing it all in her and as my ** rested on the soft soles of her cute little feet she just grunted a bit. I was kneeling with my legs on the outside of hers and holding her beautiful, Wide hips as I slowly slid my ** in and out of her then shoved it all the way back in and she just took a deep breath then pushed her ** back and got on her knees.
She never opened her eyes and just gave a little moan as I started gently ** her **, She is not as tight as I had hoped but I licked my thumb and pressed it into her **, She just tensed up a bit and took a breath then relaxed and I was able to shove it right in. She moaned softly the whole time she was on her knees while I ** her with my thumb in her ** and pinching her nips with the other hand, I pulled my thumb out and leaned over her kissing her neck as I grabbed her hips before blowing my load in her and she just laid there with her head on the toilet seat as she moaned and smiled.
I pulled out and she sat her gorgeous ** down on her feet again and adjusted her head resting on her folded arms, I snuggled up behind her and played with her ** and her ** for a bit then left her there dripping come on her feet. In the morning I went back to check on her but she was back in bed and has never said a word or acted even remotely strange around me.