Realistic, 8K, 38yo adult female with shoulder-length blonde hair, light blue eyes, fair skin, head tilted back, eyes half-lidded, mouth open in a sustained moan, expression of deep pleasure, upper body arched forward over the wooden workbench, hips tilted back, weight braced on forearms, cream and pale blue-green bouclé tweed jacket worn open, matching tweed dress hiked up to the lower ribs exposing the bare lower back, gluteus maximus, and stretched anal sphincter, a 35yo primary biological male standing directly behind her, both hands gripping her hips and waist, thick veiny penile shaft buried to the base in the rectal canal, perineum bulging under pressure, skin and shaft glistening with lubrication, sewing studio setting with a white sewing machine and black-handled scissors on the workbench to the left and shelves of storage bins behind, soft diffused window light from the left, low side-angle camera slightly from below, 50mm f/1.8 shallow depth of field, (natural skin tones. 16:9)