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abs anal anal_penetration anthro balls bodily_fluids butt clenched_teeth cum cum_in_ass cum_inside duo echidna ejaculation english_text erection eulipotyphlan genital_fluids genitals hands-free hedgehog hi_res humanoid_genitalia humanoid_penis knuckles_the_echidna male male/male mammal monochrome monotreme multiple_poses pecs penetration penile penile_penetration penis penis_in_ass pose sega sex simple_background size_difference smugh sonic_the_hedgehog sonic_the_hedgehog_(series)sonic_the_werehog sonic_unleashed teeth text werecreature wereeulipotyphlan werehog