1) "She put her dark hair in a bun" is very different from "she put a bun in her dark hair." A sticky bun? A cinnamon bun? A rosemary bun? Put her hair in a bun, but leave the bread products out of her hair.
2) It is a very different thing for a character to say, "I do have a life outside the university," than, "I do have a life outside the universe."
Huh. Maybe the latter is the story I should be writing instead.