FURVERT!

anthro big_eyes big_head black_and_white blush duo echidna erection eulipotyphlan eyes_closed fakerface fellatio foreskin genitals hedgehog knuckles_the_echidna licking line_art male male/male male_penetrated male_penetrating male_penetrating_male mammal monochrome monotreme oral penetration penile penis penis_lick red_and_white sega sex simple_background sonic_the_hedgehog sonic_the_hedgehog_(series)tongue tongue_out toony white_background