Posted on May 10, 2019May 10, 2019 by Idioms Poster Fly in the machine Oh no! – look at this – There’s a fly in the machine.Sent in by Ginny, London UK. A mixed up phrase made of Ghost in the machine, andFly in the ointment. Source of this Mixed Idiom Sent in by Ginny, London UK. Post navigationPrevious post: Too many chefs, not enough IndiansNext post: On the same boat