out to lunch

"He picked on a few boys within that group, befriend us, invited us back out to lunch at his family home and slowly over the years became a sort of father figure to me."

“In all likelihood, unless the president is completely out to lunch for some reason or another, either physically or mentally, the office itself functions.”

Phoong didn’t have any merch at the time, so instead she invited the girl out to lunch.

“So, I called them up, and it turned out that one of the men who was running the study had been a roommate of mine years before. He took me out to lunch and said, ‘What do you think?’ and I said, ‘I think I’ve got it,’ and he said, ‘You’re right.’

I would ask my friends who were trying to turn me on to "The Sopranos" and "The Wire" how did this old white guy get a television show about running around LA and going out to lunch, and who would always seem to end up in an argument that he started?