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Sunny day, optimal weather conditions to get shit done.

it means that you take advantage of the chance to do something while conditions are good. In other words, you make good use of your time or make the most of an opportunity while you have the chance.
Tomorrows gunna be a good day for hay, I say we get the boat and the boys out on the lake and find us some girls.

I need to wash my car, hopefully tomorrows a great day for hay.

It's a good day for hay, let's jump on the bikes and take a ride.
by The LiquorSwine August 07, 2016
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