Rule 34 Dev - anthro anus balls butt butt_focus erection fur genitals hand_on_butt humanoid_genitalia humanoid_penis looking_at_viewer looking_back looking_back_at_viewer male nude penis presenting presenting_hindquarters raised_tail rear_view smile solo tail moodyferret xander_(earlpolar) sergal digital_media_(artwork) monochrome sketch|23419624865