It's rude to wake up someone who is sleeping.
Simon returns home from work and sees that his wife is asleep after a 12-hour shift at the hospital.
Simon wants to eat dinner.
Simon looks up a recipe online and cooks some pasta for dinner.
Simon wakes up his wife and asks her to make dinner.
Simon eats his dinner and saves some for his wife when she wakes up.
Simon's wife gets mad at him for waking her up, and she just goes back to bed.