To have very poor aim. This hyperbolic term is usually used to denote poor marksmanship or to have very poor aim in certain activities that involve throwing something(such as certain sports).
1. While we were out hunting, Mitch was a very poor shot and couldn't even hit the broad side of a barn, and so when he ran out of ammo, he ultimately got Roy Horn'ed
by the deer he kept trying to shoot dead.
2. Damn, Mark is such a mark-ass
pitcher! He can't even hit the broad side of a barn, let alone strike anyone out. His pitches make even Rafael Palmeiro
's erectile dysfunction reach out for a glorious grand slam!
Mark H. On Urban Dictionary since February 2004.