FURVERT!

anthro biceps biped butt flaccid flexing genitals grey_body grey_eyes grey_penis grey_skin greyscale hand_on_hip horn humanoid_genitalia humanoid_penis looking_at_viewer looking_back male mammal monochrome muscular muscular_anthro muscular_male nude penis portrait pose rear_view rhinoceros rocksteady simple_background solo standing tail tail_tuft teenage_mutant_ninja_turtles teeth three-quarter_portrait tuft vein veiny_penis white_background wkd