Rule 34 Dev - alphys anthro anus areola ass bite biting_lip blush bottomwear breast_squish breasts buckteeth certainlynomat clothed clothing coat eye_roll eyewear female fish front_view glasses hair hand_on_breast heart hi_res holding_butt lab_coat leaning leaning_forward looking_aside looking_pleasured marine masturbation navel nipples non-mammal_breasts nude open_mouth open_smile pants partially_clothed penetration ponytail presenting presenting_hindquarters pubes raised_clothing raised_shirt rear_view reptile scales scalie sex_toy sharp_teeth shirt sitting smile solo_focus spread_butt spreading squish standing tank_top teeth thought_bubble topwear under_boob undertale undoing_pants undressing undyne vaginal_masturbation vaginal_penetration video_games yellow_body yellow_scales|4167322304