FURVERT!

2013 abs animal_genitalia animal_penis anthro athletic balls biceps big_muscles big_penis biped black_body black_fur black_hair equid equine equine_genitalia equine_penis erection flared_penis fur genitals grey_body grey_fur grin hair holding_penis hooves horse leash looking_at_viewer lying male mammal masturbation muscular muscular_anthro muscular_male nipples nude pecs penile penile_masturbation penis pose presenting raised_leg reclining semental sheath smile solo spread_legs spreading vein yellow_eyes