animal_genitalia animal_penis anthro balls big_balls big_penis closed_smile erection genitals horn inside knot looking_at_another lying male membrane_(anatomy) membranous_wings nude on_back on_ground penis presenting presenting_penis purple_penis ridged_penis scales solo spread_legs spreading two-tone_body window wings yetanotheraiuser dragon mythological_creature mythological_scalie scalie tail painting_(artwork) prompt_metainfo traditional_media_(artwork)