rule 34 all fours anal anal sex anthro ass backsack balls better version at paywall big penis black hair blush bodily fluids brown body brown fur clothed clothing countershading disembodied penis duo english text erection footwear foreskin fur genital fluids genitals hair hanuvo humanoid genitalia humanoid penis kenny character looking back male malemale mammal mouse murid murine partially clothed patreon penetration penile penile penetration penis penis in ass pillow pixiv precum presenting presenting hindquarters raised tail retracted foreskin rodent simple background socks solo focus sweat tail tan body tan fur text underwear underwear down underwear only vein veiny penis younger male 8782987