Rule 34 Dev - abs anal anal_probe anthro balls bondage bound chair container cum cum_in_container doctor duo electricity electrodes electrostimulation equine fur furry gay hair hand_on_head hi_res hooves horse horsecock human immobilized male male_only mammal medical milking muscles muscular nipples nude penetration penis penis_milking probe restrained restraints sitting straps tail tongue tongue_out unknown_artist wires|1658352288

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