rule 34 absurd res anthro anus avian balls big balls big penis bodily fluids bovid caprine cum cum inside duo ejaculation erection explicit text foreskin gaping gaping anus genital fluids genitals glans goat gryphon hair held up hi res horn kapri kapri kapri leaking cum looking pleasured male malemale mammal markings messy hair mythological avian mythology open mouth penis size difference text wings 5686038