My Ex's Red Robin Gas

This is the same ex from my last story, she ordered the same thing, a plain burger, a fry and a coke but from Red Robin. We didn't feel like driving so we ordered it online since it was around noon and we were hungry. Once the food got to my house she devoured it fast and told me her stomach hurt, which is always a good sign for me. She was wearing one of my shirts that were way too big for her, and the same leopard print panties/boxers because they were the most comfortable for her.

She was laying on her stomach with my face in her ass and tells me "quickly, open your mouth." So I wrap my lips around her asshole and then I feel her push, letting her longest/biggest fart ever(like 5-6 seconds long but I'd never felt so much air go into my mouth), right down my throat. She just starts laughing and demands I, "swallow" while she gripped my hair and I did, kissing her ass after.

After this I pulled her whole body weight to get her to sit on my face, and she was grinding for a few minutes before finally telling me, "open wide for me." She reached back to pinch my nose shut and I quickly pulled down her panties and sealed my lips to her naked asshole and she let out a decently big fart that tasted like the burger with a mix of an eggy and sulfuric taste that filled my mouth to the brim with my nose plugged.

We thought she was out of gas because she had to take a shit since we got McDonalds the night before. She never liked using the bathroom alone so I went with her and she was checking herself out in the mirror, and I was sitting on the bathroom floor next to the bathtub just looking at her ass. I looked up at her in the mirror and she just stared me down as she backed up and put her ass in my face. I sat up on my knees with my face in her ass, and she pulled down her panties. I sealed my lips to her asshole as she grabbed a handful of my air and let out the most disgusting fart I've ever eaten, it was like 2 seconds long and filled my mouth with a taste so vulgar I literally thought she decided to use ME as her toilet. Then she just nonchalantly goes, "swallow it, bitch" before letting go of my hair and sitting on the toilet, and switching her tone, saying "I love you" which I thought was fucking hilarious.