Translation:Dad, where are you?
For potential French friends learning Korean (like me) : Papaoutai? (it's a song haha)
A lot of kids talk informally to their parents, because they live with them, and they have a close relationship. Of course, some children to talk formally to their parents but thats not the point.
He just went to buy a loaf of bread. But it's probably expired by many years now.