4_toes anthro barefoot big_nipples black_underwear blue_fur blush_stickers bobert canine duo fox green_eyes hand_on_belly hedgehog huge_muscles humanoid_feet hyper hyper_balls hyper_muscles hyper_penis implied_yaoi inverted_nipples looking_at_penis male mammal musclegut muscular navel nipples penis poking_out pubes pubic_hair_peek puffy_nipples size_difference smug sonic_(series) sonic_the_hedgehog spines tails thick_penis wristbands yaoi