Rule 34 Dev - anal anal_penetration anthro butt_slap duo male male/male male_penetrated male_penetrating male_penetrating_male muscular muscular_male nipples nude onomatopoeia outside pain painal penetration sex slap sound_effects spanking text vocalization whimper eyrich canid canine equid equine horse mammal 3:2 hi_res monochrome sketch|5310348155