FURVERT!

alphys anthro anus balls bent_over big_penis bodily_fluids bottomless clothed clothing coat duo english_text erection female foreskin genitals glans goz-o hi_res huge_penis human lab_coat lab_coat_only male male/female mammal offscreen_male penis reptile retracted_foreskin scalie speech_bubble sweat text thick_penis third-party_edit topwear undertale undertale_(series)vein veiny_penis vulva