Francophonie· easy

avoir une case en moins

to have a compartment missing

Meaning

to be not quite right in the head

Explanation

A light-hearted way to call someone scatty or slightly unhinged. Not clinical, just teasing.

Example

Il porte des tongs en plein hiver, il a clairement une case en moins.

He wears flip-flops in the dead of winter, he's clearly a bit mad.

Origin

The brain isn't really built like a filing cabinet, of course, but the image stuck. It's treated as compartmentalised, each part with its own job, so the joke is that losing even one case throws the whole system off.

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