So one day I was staying over at her families house. Her parents and grandmother lived there along with my exes big sister and 2 little brothers. This day, her parents went to Florida for vacation and took the brothers. So it was my ex, her sister, her elderly grandmother and I. However we didn’t exactly tell her grandma so I had to sneak in late around 10pm. I waited on the side of the house until I got a text from my girlfriend. I must have been there for 10-20 minutes. I ended up getting a text from my girlfriend saying her grandma isn’t sleeping. This got pretty annoying especially because the neighbors dogs kept barking at me and it was pretty cold and dirty. That’s when I got a text from MY GIRLFRIENDS BIG SISTER, saying “are you in the backyard😂?” I simply just said yeah. Also, since the last time she farted on me, we kind of kept it friendly with each other and never brought it up until this night. She told me their grandmother was talking to my girlfriend so it’ll be awhile. Then she told me to come to her window 👀so I did. The second I got there she opened her window, smiled at me, looked around the outside, then pulled me in her room. We were trying to stay quiet and make things quick. She had on some pajama pants that didn’t exactly fit her right but it made her giant ass stick out perfectly. I got on my knees for her and she stuck her giant ass on my face and I started sniffing so hard and kissed her ass. She was twerking and grinding her ass on my face with her pants on while laughing. After a minute, she took her pants off revealing just her ass and I started licking deep. I couldn’t get to her asshole immediately. I had to dig in and work my way into her washed ass. She had just gotten out the shower but she still had a hint of sweat smell. Didn’t bother me at all. After like 20 seconds of me eating her ass, she started tapping my head saying “ok ok! Almost! Open your mouth!” I opened my mouth around her asshole and swallowed her bubbly fart. The second she farted, her eyes widened and she looked at me because of how loud it was. I licked up her asshole and started cleaning up after ourselves. We didn’t wanna get caught. I quickly went back to the window when she pulled me in for a bit and gave me a nice wet kiss. I told my girlfriend I had to go since it was taking to long. Great memories :)