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angry animal_genitalia becoming_erect blush bodily_fluids censored comic dialogue erection flaccid flowey_the_flower genital_fluids genital_slit genitals greyscale half-erect hi_res japanese_text male masturbation monochrome narrowed_eyes not_furry open_mouth penile penile_masturbation penis possessed_masturbation possession precum retsuzyohana simple_eyes slit_penis solo spread_slit sweat sweatdrop tapering_penis tentacle_masturbation tentacle_on_penis tentacle_spread tentacles text thought_bubble touching_penis undertale undertale_(series)