Rule 34 Dev - 2014 abs anthro armpit_hair armpits athletic biceps equine erection fur green_eyes grey_fur grin hair hand_behind_head hi_res horse humanoid_penis large_penis leaking looking_down male male_only mammal medial_ring muscular nude pecs penis pockyrumz pose precum pubes sitting smile solo spread_legs spreading testicles vein veiny_penis white_hair|2603759120