FURVERT!

anus backsack balls big_butt bulge butt butt_grab clothed clothing disembodied_hand duo equid equine flexible genitals gym hair hand_on_butt hooves horse jockstrap leg_warmers legwear long_hair looking_back male mammal nude partially_clothed perineum pinup pose presenting presenting_anus presenting_hindquarters richarddeus smile solo_focus splits spread_butt spread_legs spreading underwear weights yoga_mat