can't hit the (broad) side of a barn
slang Has very poor aim. Boy, you can't hit the broad side of a barn—the net is over here, you know! These guys haven't made a single basket in the last 10 minutes—they just can't hit the side of a barn right now.
can't hit the (broad) side of a barn
Rur. cannot aim something accurately. You're way off. You couldn't hit the broad side of a barn. Please don't try to throw the paper into the wastebasket. You can't hit the side of a barn.