alphys anthro anus aquatic areola bite biting_lip biting_own_lip blush bottomwear breast_squish breasts buckteeth butt certainlynotmatt clothed clothing coat duo eye_roll eyewear female fish front_view glasses hair hand_on_breast heart_symbol hi_res holding_butt lab_coat leaning leaning_forward looking_aside looking_pleasured masturbation navel nipples non-mammal_breasts nude open_mouth open_smile pants partially_clothed penetration ponytail presenting presenting_hindquarters pubes raised_clothing raised_shirt raised_topwear rear_view reptile scales scalie self_bite sex_toy sharp_teeth shirt sitting smile solo_focus spread_butt spreading squish standing tank_top teeth thought_bubble topwear under_boob undertale undertale_(series) undressing undyne vaginal vaginal_masturbation vaginal_penetration yellow_body yellow_scales
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