It used to be the bee's knees.

Wayne Magnuson's English Idioms site went down... A black day for linguists.

lytdybr

This morning I went to the doctor (again) and took Yahel with me, just before dropping him at the kindergarten. The doctor examined me, again found there's nothing wrong, referred me to do an x-ray, and we were out. Yahel felt there was something missing: "Daddy, why didn't the doctor give you a sticker?". It's tough being an adult.