The law of the land dictates that a man must be employed, and I've been out of work for quite some time. However, my wife's sister has been kind enough to offer me a place to stay, even though she knows my predicament. Every day, I find myself drawn to her lingerie, specifically her bra and panties, which she hangs to dry near the window. The sight of them fluttering in the breeze stirs something within me, and I find myself unable to resist the urge to handle them. As I surreptitiously remove the bra and panties from their line, the thrill of it all sends a rush through my body. I can't help but fantasize about what they might feel like on my wife, and I find myself getting rather excited. I begin to stroke myself, my hand moving rhythmically as I picture her in my mind, wearing my sister-in-law's undergarments. The thought is enough to bring me to the edge, and I find relief in my wanking session. Afterwards, I return the bra and panties to their rightful place, hoping that my sister-in-law won't suspect a thing.