I am completely obsessed with my wife's twin sister, Kim. She is 34. We all live together, and every day I dress up in her lingerie, take a pair of her dirty panties out of the laundry basket, and masturbate on her bed.

Some times I jerk off on her panties, other times in her shoes. Sometimes I'll hump her pillow until I cum.

A couple of times, she has fallen asleep on the couch after walking home from work. Her feet were all sweaty, so I kissed and licked them, and sucked her toes. Another time I removed my pants and rubbed my cock against the soles of her feet, then came all over them. I licked my cum off of her beautiful feet after.

I've never been so turned on in my entire life. I masturbate to these images every day. And when I have sex with my wife, I think of Kim waking up and catching me fucking her pretty feet with my tiny cock, and laughing at it when she sees it.

I'm wearing one of her dresses, bra, pantyhose, and a pair of her shoes and masturbating while I type this and look at a picture of her. Oh god.... I'm going to cum in your dirty panties, Kimberly!