A no-brainer

My daily conversations are peppered with lots of common phrases that have been passed down through the English language for years.

"I'll be waiting for her to finish that report until the cows come home."

"Well, aren't you a sight for sore eyes?"

"Oh geez, look what the cat dragged in."

"He's not the sharpest tool in the shed."

"Let's just play it by ear."

"I have sex every once in a blue moon."

I heard on the news that tomorrow, New Year's celebrants will be able to look up from their champagne glasses to see a rare Blue Moon.

It simply means that each year has twelve full moons that occur on a monthly basis. Each solar calendar year has an excess of approximately eleven days compared to the lunar calendar so that every two or three years, there's an extra full moon. Hence, the Blue Moon.

So, in a nutshell, the phrase, once in a blue moon, means every once in while.

I can't believe I never put two and two together about that.

What can I say? Sometimes I'm dumb as a box of rocks.