European teen's butt reshaped by partner

A young, European girl with a plump behind seeks the expertise of her friend in reshaping her butt. He eagerly obliges, using his sizable member to sculpt her curves to perfection. Positioning her on all fours, he applies firm pressure to his thick shaft, molding her derriere into a desirable shape. His relentless efforts result in a transformation, leaving her with a more pleasing posterior. Unbeknownst to him, she had a different agenda, and she seizes the opportunity to prove her allegiance to her boyfriend. She reveals a hidden camera, capturing the entire encounter. With this leverage, she ensures her partner's silence, all the while indulging in her own desires.