a sitting duck

a sitting duck

something or someone that is easy to attack or criticize Unarmed policemen walking the streets late at night are sitting ducks.
See also: duck, sitting
References in periodicals archive ?
He was a sitting duck as the A's completed a rare 8-6-2-5-6 double play.
He was a sitting duck and the A's completed a rare 8-6-2-5-6 double play.