one brick short of a full load

Adjective

Meaning

(slang) Not mentally sound; insane.
I feel fine today, but that gentleman conversing with the house plant there may be one brick short of a full load.

(idiomatic) Stupid.
You have to be one brick short of a full load to think that '7' is a letter in the alphabet.

Source: en.wiktionary.org

Synonyms

few sandwiches short of a picnic few cards shy of a full deck one fry short of a Happy Meal

Close letter words and terms

one block away one blow one born in australia one brief moment one by one one C