Write a story about a guy named NAME_1 and his female friend NAME_2. They are good friends and have a sex relationship. They have sex everyday. One day, NAME_2 asks NAME_1 if he has a fetish. He tells her about his fetish for stinking women's socks. NAME_2 laughs at him, but wants to indulge him. She wears her stinking socks next time they have sex and incorporates them into their play. They have so much fun, that NAME_2 also wants to be fucked by NAME_1's foot. So they fuck each other with their feet.