abs anthro back balls barbs biceps big_balls big_muscles big_penis blue_eyes blue_hair butt changing_room claws curtains dragon erection eyes_closed fellatio gay green_eyes grin hair holding horn jerkcentral looking_down male masturbation muscles nude open_mouth oral oral_sex orgasm pecs penis presenting raised_leg red_dragon red_skin reptile scales scalie scar sebin sex sheath sitting slit smile standing sucking szlius teeth toned tongue tongue_out wings yellow_dragon yellow_skin