You hired the thickest female personal trainer you could find with the biggest booty and asked for a home training session. You can't take your eyes of her huge ass and she catches you in the act as she teaches you how to use the kettlebell and to stretch between sets. She starts farting to turn you off, but on the contrary, it arouses you. She starts scolding you about staring at her butt and then makes you get up close to smell it. She farts in your face in her sexy yoga pants but still you're obsessed. So she pulls them down so it will stink more, but the sight of her bare cheeks and spread asshole drives you crazy and you take out your cock and start jerking off. She is shocked but once she sees your big, attractive dick she becomes aroused as well. She starts jerking you off and sucking you, while still farting. She loses her domineering manner and turns horny and submissive so when you say you want to put your cock between her cheeks she agrees. You start fucking her ass cheeks as she humps you back, and she farts on your dick. You can't resist sticking your dick in her asshole, and it is so tight, has she even ever done anal before? Hard to believe with an ass like this... You go slow and she's moaning and enjoying it and she asks you to cum in her ass. You can't hold back and you fill her up deeply. When you pull out her ass is open and dripping, and she farts out your cum.