There are a couple phrases that students use that really annoy me in lessons.
"So, is it just...?"
"So, do you always...?"
The main reasons they annoy me is because I can tell students are just looking for an algorithm rather than learning the background reasoning. They want a formula they can plug into. They don't want to think about it.
I mean, I get it if they're looking for a generalization and if they truly understand what is happening and are putting the pieces together to make a formula, then I'm all for it.
The worst thing about the phrases, though, is that they shut out learning. I will try to turn the questions back around and ask them, "You tell me. Is it always...?" Then they get frustrated that I didn't answer their "simple question" and solidify their, "Well, I guess I'm just going to fail this quiz" mentality. If I answer, even if I follow it up with, "Yes, but here's WHY it works (or doesn't)," they shut off their brains after I say, "Yes."