2018 all_fours anthro anticipation anus armadyl avian balls butt chalkboard classroom desk dialogue digital_media_(artwork) domination dragon duo english_text eyewear glasses half-erect looking_back male male/male male_domination mr._mordaut on_table penis precum presenting presenting_hindquarters ruler runescape school spread_butt spreading standing student submissive_male table tail_grab teacher teacher_and_student text unknown_artist_(artist) wings