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anthro anthro_penetrated anus beaker belly bent_over black_sclera blue_eyes blush bodily_fluids bone breasts butt butt_grab clothed clothing coat duo erection eyes_closed eyewear eyewear_only female female_penetrated flustered glasses glasses_only hand_on_butt humanoid_on_anthro humanoid_penetrating humanoid_penetrating_anthro lab_coat laboratory_equipment laboratory_glassware looking_at_another looking_at_partner male male/female male_penetrating male_penetrating_anthro male_penetrating_female nipples non-mammal_breasts non-mammal_nipples nude penetration penile penile_penetration penis_in_pussy scales scientific_instrument sex size_difference skeleton slightly_chubby slightly_chubby_anthro slightly_chubby_female small_breasts sweat tail thick_tail toony topwear vaginal vaginal_penetration wearing_glasses white_body white_eyes yellow_body yellow_scales teebsly undertale undertale_(series) alphys gaster animated_skeleton humanoid lizard reptile scalie undead

anthro anthro_penetrated anus beaker belly bent_over black_sclera blue_eyes blush bodily_fluids bone breasts butt butt_grab clothed clothing coat duo erection eyes_closed eyewear eyewear_only female female_penetrated flustered glasses glasses_only hand_on_butt humanoid_on_anthro humanoid_penetrating humanoid_penetrating_anthro lab_coat laboratory_equipment laboratory_glassware looking_at_another looking_at_partner male male/female male_penetrating male_penetrating_anthro male_penetrating_female nipples non-mammal_breasts non-mammal_nipples nude penetration penile penile_penetration penis_in_pussy scales scientific_instrument sex size_difference skeleton slightly_chubby slightly_chubby_anthro slightly_chubby_female small_breasts sweat tail thick_tail toony topwear vaginal vaginal_penetration wearing_glasses white_body white_eyes yellow_body yellow_scales teebsly undertale undertale_(series)alphys gaster animated_skeleton humanoid lizard reptile scalie undead

anthro anthro_penetrated anus beaker belly bent_over black_sclera blue_eyes blush bodily_fluids bone breasts butt butt_grab clothed clothing coat duo erection eyes_closed eyewear eyewear_only female female_penetrated flustered glasses glasses_only hand_on_butt humanoid_on_anthro humanoid_penetrating humanoid_penetrating_anthro lab_coat laboratory_equipment laboratory_glassware looking_at_another looking_at_partner male male/female male_penetrating male_penetrating_anthro male_penetrating_female nipples non-mammal_breasts non-mammal_nipples nude penetration penile penile_penetration penis_in_pussy scales scientific_instrument sex size_difference skeleton slightly_chubby slightly_chubby_anthro slightly_chubby_female small_breasts sweat tail thick_tail toony topwear vaginal vaginal_penetration wearing_glasses white_body white_eyes yellow_body yellow_scales teebsly undertale undertale_(series) alphys gaster animated_skeleton humanoid lizard reptile scalie undead

anthro bed big_breasts big_butt blush bodily_fluids boxer_briefs breast_grab breasts bulge butt clothed clothing cuddling duo eyes_closed female furniture hand_on_breast hug humanoid_on_anthro kneeling male male/female navel non-mammal_breasts nude open_mouth open_smile panties pillow simple_background smile sweat tail thick_tail topless underwear pastrydog undertale undertale_(series) alphys gaster humanoid lizard reptile scalie black_and_white monochrome