Masterpiece, best quality, ultra-realistic, 8k resolution, 32yo adult female, plus-size endomorph body type, wide hips, full bust, bent over a white porcelain toilet in a narrow restroom stall, palms gripping the toilet rim, back arched, head hanging low, champagne cream-colored satin mini dress bunched up around her lower back, primary biological male 35yo standing behind her, gripping her hips, veiny shaft deeply penetrating the stretched vaginal introitus, visible penetration depth, vestibule tissue stretching with insertion, glistening lubrication, luxurious restroom stall, metallic partitions, dim ambient lighting with soft highlights on skin sheen, rear-three quarter view, Golden Angle, (low side view), 35mm lens, f/2.8, sharp focus on the point of penetration, cinematic color grading