FURVERT!

animal_genitalia animal_penis anus balls black_penis butt butt_grab cutie_mark dock_(anatomy)equid equine equine_genitalia equine_penis erection eyelashes fan_character femboy feral frenum_ladder frenum_piercing gaping gaping_anus genital_piercing genitals greyscale grispinne hair half-closed_eyes hand_on_butt hasbro hi_res holding_butt horse inviting ladder_piercing long_hair looking_at_viewer lying male mammal medial_ring monochrome my_little_pony narrowed_eyes on_back penis penis_piercing piercing pony presenting presenting_hindquarters seductive solo spread_anus spread_butt spreading tail