Rule 34 Dev - 1boy 2017 2d artist_request black_sclera black_sweater blue_blush blue_hoodie blue_penis fangs humanoid jacking_off male male_only masturbating masturbation outertale outertale_sans sans sans_au skeleton solo sweating tagme tagme_(artist) undertale_(series) undertale_au undertale_fanfiction up_close white_eyes yellow_hoodie|2694855272