Could you explain the expression "be (strictly) for the birds" ? Is it old fashioned? Here's an extract from The catcher in the rye by J. D. Salinger; Where I want to start telling is the day I left Pencey Prep. Pencey Prep is this school that's in Agerstown, Pennsylvania. You probably heard of it. You've probably seen the ads, anyway. They advertise in about a thousand magazines, always showing some hotshot guy on a horse jumping over a fence. Like as if all you ever did at Pencey was play polo all the time. I never even once saw a horse anywhere near the place. And underneath the guy on the horse's picture, it always says: "Since 1888 we have been molding boys into splendid, clear-thinking young men." Strictly for the birds. They don't do any damn more molding at Pencey than they do at any other school. And I didn't know anybody there that was splendid and clear-thinking and all.