FURVERT!

anthro anus backsack balls bent_over big_butt butt disembodied_penis duo echidna erection femboy genitals heart_symbol knuckles_the_echidna male male/male mammal monotreme penis presenting presenting_anus presenting_hindquarters sega simple_background solo_focus sonic_the_hedgehog_(series)squish_(artist)vein veiny_penis white_background