artist request, mettaton, mettaton ex, sans, undertale, white background, animated skeleton, big dom, big dom small sub, bigger dom, bigger dom smaller sub, bigger penetrating, bigger penetrating smaller, black hair, blue blush, blush, bottom sans, completely naked, completely nude, grabbing arms, hair over one eye, humanoid, humanoid robot, larger penetrating, larger penetrating smaller, legs spread, licking, licking head, male, male penetrating, mettasans, nude, penetration, pink blush, pink eyes, robot, robot humanoid, robotic penis, sans (undertale), seme mettaton, sex, skeleton, small sub, small sub big dom, smaller penetrated, smaller sub, smaller sub bigger dom, spread legs, sweat, top mettaton, trembling legs, uke sans, undead, undertale (series),

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