Rule 34 Dev - black_hair blush bone bottomwear clothed clothing dialogue dress_shirt duo eyes_closed female gesture group hair hair_mouth hand_gesture hand_on_cheek humor jacket joke laugh living_hair male midriff monster_girl_(genre) navel necktie not_furry one_eye_closed open_mouth open_smile pointing pun school_uniform sharp_teeth shirt simple_background skeleton skirt smile talking_to_another teeth text tongue tongue_out topwear trio uniform white_background artisan-garden skullgirls undertale undertale_(series) filia samson_(skullgirls) sans_(undertale) animated_skeleton human humanoid mammal parasite_(skullgirls) undead 2015 5:3 crossover english_text monochrome unavailable_at_source|3495383535