Rule34https://rule34.xxx/index.php?page=atom&tags=2019 abs anthro anthro on anthro ass back muscles balls barely contained biceps big balls big penis bishop (germanshepherd69) clothed clothing digital media (artwork) duo equid equine erection eye contact eyebrows fingers frottage grey background greyscale hair hair bun head grab horse huge cock jockstrap kissing looking at another male male/male mammal mane monochrome muscular muscular male oouna penis sex simple background standing tahoe underwear vein veiny penis2024-05-02T11:44:00ZRule34