blue moon in a sentence

Example sentences for blue moon

Since these require effort, only once in a blue moon does someone with a bad grade actually do it.
On the whole it has worked well for us-though once in a blue moon it has failed us.
My husband's online sartorial purchases come once in a blue moon.
Movie phenomena are supposed to occur once in a blue moon, or a new one.
But momentum for it comes around once in a blue moon, usually when it comes time to cut taxes.
It happens once in a blue moon that it gets destroyed.
Every once in a while, every blue moon, audiences want to be reminded of why they made someone a star in the first place.
The infrequency explains why a blue moon implies a rare event.
Every once in a blue moon, the fashion world gets excited about something you can actually wear.
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