out to lunchRate this phrase:(5.00 / 2 votes)Say it
Away eating lunch or for a midday break; especially, away from work or a job.

She's out to lunch right now, but you may leave her a note.

Additional definitions for 'out to lunch':

out to lunchClueless, inattentive or careless.
out to lunchIs mindless; isn't paying any attention.
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"out to lunch." Phrases.net. STANDS4 LLC, 2017. Web. 22 Jun 2017. <http://www.phrases.net/phrase/out-to-lunch_5954>.

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