In full scale parlance, you will be found "dead at the stick" if you run out of airspeed, altitude and ideas all at the same time!! Peter may be correct. With no power and the prop just a decoration on the nose, it's just as useful as a dead stick!!
It's like the question, why do we drive on a parkway and park in a driveway!! The English language can get all jumbled up with slang and these days it's just getting worse! It wouldn't be this way of people didn't accept it as "normal." Especial in business dealings, even if it's shopping and checking out at Wal-Mart!
Type at you later,
Dan McEntee