Definify.com

Definition 2024

(idiomatic) 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.

not mentally sound; insane

Russian: ба́шню снесло́ ‎(bášnju snesló) (the tower (i.e. the head) is blown away), без царя́ в голове́ (ru) ‎(bez carjá v golové) (without a tsar (king) in the head), ви́нтика в голове́ не хвата́ет ‎(víntika v golové ne xvatájet) (head is one bolt short), котело́к не ва́рит (ru) ‎(kotelók ne várit) (the pot doesn't boil), кры́ша пое́хала (ru) ‎(krýša pojéxala) (roof slid away), не все до́ма (ru) ‎(ne vse dóma) (not everyone at home)
Swedish: ha en skruv lös (sv) (have a loose ****)