A fork of Rural Dictionary
The expression means to be in a daydream, to be in one's own world, sometimes to be deep in thought and having one's gaze unfocused while staring off at nothing in particular.
Alex was ignoring Fiona but she knew he was merely away with the fairies again.
giving off the sense of being preoccupied, dreaming, or delusional.
While explaining a complex math problem, Sarah noticed her classmate doodling on his notebook, muttering to himself. "Are you even listening?" she asked. "A bit," he mumbled back, clearly away with the fairies.