Idiom: in a world of one’s own
— I’m sorry I wasn’t listening a moment ago—I was in a world of my own.
— The director has been in a world of her own working in the kitchen for the past three hours. I've gone in there three times and she hasn't notice me.
— Our teenage daughter is in a world of her own these days.
— When my daughter reads a book, she's in a world of her own and you can't get her attention unless you take the book out of her hands.
— The bus driver was in a world of his own and didn't notice when we asked how much the fare was.
— Please pay attention to these instructions. You look like you're in a world of your own.
— "What is your dog doing rolling in the flowers?" " Who knows? He's always in a world of his own."
— Is everything okay? You've been in a world of your own all afternoon.
— My husband and I were both in a world of our own looking out the train window train and we missed our stop.
— Sorry I bumped into you! I must've been in a world of my own.
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