Maria decided to remind her former friend who's boss—and today she'll learn what it means to be not just a submissive, but a full-fledged slave, ready to do anything for her pleasure. maria orders her friend to lie down on the floor, stepping on her back. "you're my mat now," she says, increasing the pressure, and the slave only nods, biting her lip. then maria begins bouncing like on a trampoline. then she orders her to kiss her feet—the slave rises to her knees and begins kissing every toe until maria stops her, stepping on her head and pinning her to the floor. "not enough," she snaps, and the slave gets back to work, this time with desperate zeal. but the real test is yet to come: maria sits up and orders her to open her mouth. naty obediently parts her lips, and maria pushes her big toe into her mouth, all the way to her throat. tears stream down her cheeks, but maria doesn't stop. "you exist to serve my feet," she concludes.