alcohol anal anthro athletic balls bdsm bed beer belly beverage black_nose bondage bound butt canine chain chub clenched_teeth cum cum_in_ass cum_inside cum_on_self cumshot dog duo erection eyes_closed fur gay german german_shepherd gshep hands-free hands_free_orgasm hat hyena invalid_tag leaky lying male mammal mitts musclechub muscles nipples nude on_back orgasm overhang overweight penis playing redneck sex shepherd size_difference standing table_lotus_position tcw teeth thick top trucker uncut