BEg2 chapter 7 what is a smart cookie anyway?

[Michael Bailey]

“Lucas and Justin in reality are smarter cookies
    than the Girl Scout type Maxine was imagining.”


Context here is she’s toggling out off the Maxine New York maven mode &
giving them credit for more sense, obviously.

And a sidelight would be, like, she is getting the munchies!


But what attributes would a “smart” cookie possess?

Add niacin and adderall to the dough?