“Cookie” is one of those words that an adult cannot utter without sounding childish. I don’t care if you’re 98 years old and wearing both a monocle and a top hat. If you say the word cookie, you don’t sound like an adult.
It’s hard to maintain your dignity as an adult and admit you want to eat a cookie. At a deli counter recently, I was asked “do you want chips or a cookie with that sandwich?” Instinctively, I felt the need to lower my voice when I uttered: “I want a cookie.”
Maybe this is one of the things that makes the idea of a “cookie diet” so appealing. The concept is: “eat cookies, lose weight” as this 6-second clip explains:
I can lose weight by eating cookies? Fun! It’s like being a child again! Maybe I can start an exercise regimen using only swing sets and seesaws. Forget about stairmaster, take a look at my new home gym:

The lawyer in me wants to point out that sure, you can lose weight by eating nothing but cookies, but doesn’t it depend on what your definition of a cookie is? Can you take a salad, mash it down into a little round circle and call it a cookie?
I think the true test of whether or not something is a cookie is if children want to eat them. If a cookie diet cookie and a double-stuffed Oreo elicit the same smile on a 7-year-old, then it’s a cookie. If not, then it’s probably not really a cookie, it’s a smallish, round, food-substitute.
“Eat smallish, round, food-substitutes and lose weight! It’s that simple!”