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.
A)
The Crud that collects under the keys in a keyboard. Usually more severe in the keyboards of programmers and webmasters as they tend to spend a lot of time at the the computer and thus eat at their desk. Mainly affecting IBM Model M (clicly) style boards.
B)
Can also be used to gross out Non-Techie people
A)
Bill: want to go to the club?
Bob: No, I've got to clean out my board chow, keys are starting to stick.
B)
Bill: Want to go out to get a bite?
Bob: No, i am just going to have some of my board chow/
Bill: Whats' that?
Bob: The food scraps that collect in my keyboard; Want some?
Bill: *GAG* *HURL* *GAG*