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 ofGhost in the machine, andFly in the ointment. Source of this Mixed IdiomSent in by Ginny, London UK. Post navigationPrevious post: Too many chefs, not enough IndiansNext post: On the same boat