Anal training of Marry

Marie, the petite French housekeeper, is tidying up the flat post a wild and intense group intimacy session. With sensual undergarments and adult play items scattered around, the task seemed daunting. While she leans forward, Markus spots her exposed rear end, as well as the massive anus taper his maid is wearing discreetly.
What purpose does it serve? Let's explore the reveal!.