Here’s something that I heard when I was kid.

There was a fussy customer who was ordering a steak at a restaurant. He told the waiter “I want a steak that is cooked neither rare nor overdone. It should be just right, you know, in the groove! The steak should not be too tough nor should it be too soft and mushy. But, in the groove! See that the steak is not served sizzling hot, but it should not be cold either. Make sure that it’s in the groove!” … and like this the order went on.

The chef was furious after the waiter had read out the order. He charged into the restaurant and grabbed the customer by his collar, and yelled at him “You can kiss my a**! Not on the left cheek, not on the right cheek, but in the groove!”