Rule 34 Dev - 1boy 256:135 anthro anus ass avian backsack balls beak bent_over berdly bird blue_anus blue_balls blue_body blue_feathers bubble_butt butt_focus deltarune dialogue english_text feathers genitals half-closed_eyes hand_on_butt hi_res laugh male male_only narrowed_eyes nude perineum presenting presenting_hindquarters raised_tail rear_view silly_face simple_background smug solo solo_male standing tail_feathers talking_to_viewer teasing text tongue tongue_out undertale_(series) unknown_artist video_games yellow_beak|6026074784