One Sandwich Short of a __ Basket, Not Too Bright

This page is the CodyCross answer for the clue below from World of Books, Group 286, Puzzle 5 (Library Card).

Question is: One Sandwich Short of a __ Basket, Not Too Bright

and the answer is: PICNIC

Word Meaning:

PICNIC — An informal social gathering, usually in a natural outdoor setting, to which the participants bring their own food and drink.

Definitions from Wiktionary.

One sandwich short of a __ basket, not too bright — CodyCross Answer | CodyCross Solutions