FURVERT!

abs animal_genitalia animal_penis anthro big_penis biped chewycuticle clothing digital_media_(artwork)doorway equid equine equine_genitalia equine_penis erection flared_penis genitals green_eyes hair half-erect horse inside jockstrap male mammal medial_ring mottled mottled_genitalia mottled_penis muscular muscular_anthro muscular_male nipples penis shaded simple_background solo standing underwear