FURVERT!

anthro anus backsack bald balls biped blue_shell blush butt close-up feathered_wings feathers femboy floating_wings genitals hand_on_butt holding_butt koopa koopa_paratroopa koopa_troopa looking_at_viewer looking_back looking_back_at_viewer male mario_bros mario_kart nintendo nude presenting presenting_anus presenting_hindquarters reptile sailorsyaoran scalie shell smile solo spiked_shell spikes spikes_(anatomy)spiny_shell_(mario_kart)spread_butt spreading standing turtle_shell unusual_anatomy unusual_wings wings