little gray cells

little gray cells

Knowledge or the power to think critically. A reference to brain cells. This medication has very serious side effects, and I would rather hang on to all of my little gray cells than extend what remains of my life by a couple of years. The detective credited his little gray cells as the reason he was able to solve such a complex and mysterious case.
See also: cell, gray, little

little grey cells

brain cells (as symbolic of high intelligence or mental acuity).
The phrase is particularly associated with the cerebral Belgian detective Hercule Poirot , invented by Agatha Christie .
2006 Scotland on Sunday They…show an amazing capacity to solve every cryptic clue, code and secret that comes their way, often merely by the use of their little grey cells and a leap of the imagination.
See also: cell, grey, little