You are a sitting duck out there. Get in here where the enemy cannot fire at you.The senator was a sitting duck because of his position on school reform.
idiombe a sitting duckattack criticize used about someone who cannot defend themselves against people who might harm them or try to get an advantage over them:Car drivers are sitting ducks for the government who get far more cash out of them for fuel and car tax than is actually spent on the roads.You're a sitting duck out there all by yourself at night. What would you do if someone grabbed you?