have all one's buttons

Idioms

Also, have all one's marbles. Be completely sane and rational. For example, Grandma may be in a wheelchair, but she still has all her buttons, or I'm not sure he has all his marbles. These slangy expressions date from the mid-1800s, as do the antonyms, meaning “become (or be) mentally deficient.”

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023