What pulls the reader out of your story?
From critters.org, I certainly have read many efforts that caused the literary equivalent of whiplash. Reading along and suddenly, a voice from the background says, “Like a hunter*,” and my beleaguered brain locks up. Who said that? Was that character always there, but I just didn’t notice? Or my personal favorite, the main character just happens to be carrying a sonic screwdriver or whatever perfectly fits the need. Where did they get that? Another that gets me involves the unreasonable reaction. One character bids another a cheerful “good morning,” to which the second character turns red in fury and shouts, “get bent, you lout!”