Out to lunch:

If someone is “out to lunch”, it means that they are “clueless” or just “have no idea what they doing or thinking”.

Her husband is cheating on her and she has no idea at all. She’s so out to lunch. It's sad to watch.

There is no way that little restaurant will succeed.  It is in a terrible location and almost no customers will find it. The owner is really out to lunch.  I hate to say it, but I’m guessing it will fail in 6 months or less.


Persian:
بی خبر