What about killing a dragon with the guards, and as soon as it falls down dead, one guard will say "A guard might get nervous when you approach him with your weapon out".
It's not even like that. I could be mixing a potion at an alchemist shop, and the alchemist will walk down stairs and say "That spell looks dangerous, keep your distance."
I could be at the forge in Whiterun and the lady will walk out of her shop near me and say "That spell looks dangerous, keep your distance."
I could be walking down the street to my house, a beggar will walk by and say "That spell looks dangerous, keep your distance."
I could be visiting the Jarl to see if he has any jobs for me, one of his court members will say "That spell looks dangerous, keep your distance."
Seriously. Every NPC says it, and if they don't say that exact line, they say something about my spell which I don't even have equipped. It's driving me mad hearing that same line over and over and over. I feel like Dexter in the episode of Dexter's Laboratory when the french record skipped and all he heard was "Omellette du fromage" over and over.