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gasteritis

ambiguous_gender big_breasts black black_sweater breasts fangs gaster gasteritis grabbing_own_breast gray_tongue lab_coat labcoat rule_63 sharp_teeth skeleton sweater tongue tongue_out undertale undertale_au undertale_fanfiction
ambiguous_gender big_breasts black black_sweater breasts fangs gaster gasteritis grabbing_own_breast gray_tongue lab_coat labcoat rule_63 sharp_teeth skeleton sweater tongue tongue_out undertale undertale_au undertale_fanfiction
1boy ass big_ass big_butt black_clothing black_eyes bubble_ass bubble_butt fat_ass fat_butt gaster gasteritis huge_ass huge_butt looking_at_viewer looking_back male male_only massive_ass massive_butt plump_ass solo thick_ass undertale undertale_(series) undertale_au white_body white_pupils white_skin
1boy ass big_ass big_butt black_clothing black_eyes bubble_ass bubble_butt fat_ass fat_butt gaster gasteritis huge_ass huge_butt looking_at_viewer looking_back male male_only massive_ass massive_butt plump_ass solo thick_ass undertale undertale_(series) undertale_au white_body white_pupils white_skin