"You Just Don't Get It, Do You?"

I recently stumbled across this absolute gem of a video that complies one of the worst cliches in movies. Take a moment to stumble upon it with me:
I try to avoid cliches at all costs--linguistic cliches, image cliches, character cliches, genre cliches. But "You just don't get it, do you?" is one I'd never thought of until right now. 
No surprise that the first thing I did after watching this video was to do a search of my WIP document for the offending phrase. You'll never guess what I found!
"You don't get it, do you?" Constance asked. "I SPOILER SPOILER SPOILER."
You'll notice a pretty significant spoiler follows the "You don't get it, do you?" line. This is the moment in the book when the MC (who is listening to her sister, Constance, talk) comes to understand the major conflict of the book is about a million times bigger than she previously imagined. This reveal is hugely important. It's kind of the fulcrum upon which the whole book balances. 
So it really SUCKS that I revealed it in the lamest, most cliched way imaginable. But, what sucks worse is that I didn't even know I was being so lame. That's one of the hardest things about writing--you make the best decisions based on the information you have at the time. Inevitably, you'll read something you wrote a month ago that makes you question whether you regressed to the fifth grade at the time you wrote it.
Have you guys ever found something facepalm-worthy in your own writing?