" Shooting fish in a Barrel"
Annie, get your gun
He was such a bad shot that if he dropped his gun it wouldn't even hit the ground.
Years ago a buddy of mine bought a Luger and a P-38 and he talked me into going to a new indoor range here in town so he could try them out. After about a box of shell were fired the RSO came up behind him and told him,"we don't charge anything extra here if you hit the target".