FURVERT!

anthro anthro_on_anthro big_penis blush bodily_fluids dripping duo echidna eulipotyphlan genital_fluids genitals hedgehog holding_both_legs humanoid_genitalia humanoid_penis imminent_sex knuckles_the_echidna line_art lying male male/male mammal monochrome monotreme navel on_back penis precum precum_drip russlanhub sega shadow_the_hedgehog sonic_the_hedgehog_(series)