Prompt

The second man's erect penis enters her anus from behind, his shaft buried between her spread bare buttocks as he fucks her ass with steady deep thrusts, both of his hands gripping her hips and pulling them back against his pelvis. Her left arm reaches back past her hip, her left hand flat on his thigh with short square black-polished nails, steadying herself while she keeps sucking the first man. Her left shoulder, elbow and forearm are all visible, one continuous arm from shoulder to the open hand. Both nude men are present in the frame at the same time: one at frame-right with his penis deep in her mouth, the other at frame-left behind her hips, his torso, arm and thigh in view.