Top Definition
For some, a district-wide Pro-D Day is a welcome break from the normal daily drudgery of doing boring schoolwork. Hats are thrown in the air to celebrate this occasion, as children run into the streets to frolic amongst one another.

However, one is missing. This child is completing the next chapter's math assignments. He is double checking, triple checking, and then rewriting them in three different languages.

For the sake of anonymity, we will name this child Jacob - which in ancient Piemessessian (the language of Piemessess) means "he who has no life".

Truly, Pro-D Days are seen differently by all; just some a little more than others.
Jacob: "Oh damn, it's a Pro-D Day tomorrow. I won't be able to come in and ask the math teachers some questions on next year's midterm exam problems."
by Civilian of October 19, 2006

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