rule 34 2021 absurd res after anal after sex anthro anus ass backsack backwards baseball cap backwards hat balls baseball cap bedroom eyes big balls big muscles bodily fluids body writing border clothing cum cum in ass cum inside cum on butt dialogue english text equid equine erection eyebrows genital fluids genitals grey background hair hat headgear headwear hi res hooves inviting kris zourik legs up looking at viewer male mammal muscular muscular anthro muscular male narrowed eyes nipples nude pecs penis seductive simple background smile solo spread legs spreading talking to viewer tally marks text white border zourik 5407437