Your walk into the hallway and your GF is just getting off the toilet, she didn't hear you come in, and you witness her poke her finger up her unwashed asshole, and sniff it. She see's you and is embarrassed, she admits to you she stopped using toilet paper as it irritates her asshole, than in combination of the exercise she just done at the gym has made her asshole stench strong. She admits she kinda is addicted to the smell, it stinks gross but it is kinda addicting. She begs you to come and sniff her bumhole to see what she's talking about! Before you know it she's convinced you to lick her unwashed dirty hole, cleaning it for her, poking your full nose into her sh*tter and eating her equally stinky pussy. The smell travels you see! She sits on the toilet and encourages you as you clean! She is gonna make you addicted to her smelly, unwashed dirty ass. She turns over and encourages you to jerk and cum as you clean, you know it turns you on really.