in the clouds
1. Detached from reality; in a fanciful or imaginative state; in a reverie. Jonathan has been more and more in the clouds lately; I just can't seem to get through to him. Janet's been in the clouds ever since she and Jim started going out.
2. Impractical or unrealistic. Your wild business ideas are always in the clouds, but this one is downright ridiculous!
in the clouds
Impractical.