目瞪口呆

like a dying duck in a thunderstorm swim like a duck like a duck to water like water off a duck's back Like water off (on) a duck's back in two shakes of a duck's tail like rabbits in a warren like buckets in a well like a rat in a hole like a bee in a bottle a duck of a like a duck to water like water off a duck's back in two shakes of a duck's tail in tow shakes of a duck's tail like a rat in a hole like rabbits in a warren a dead duck duck hepatitis A virus a sitting duck knee-high to a duck stick like a leech