(right) on cue

(right) on cue

At exactly the most (or least) opportune moment, as if on purpose. We had just been talking about the awful new company initiative when, on cue, the CEO walked into the room. I was complaining to my wife that none of my friends had asked how our recent move when, when one of them sent me a text message about it right on cue.
See also: cue, on
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