A derivative of the word Enchilada.
A tortilla rolled and stuffed usually with a mixture containing meat or cheese and served with a sauce spiced with chili.
When a Mexican restuarant has a special day that gives these Enchiladas at a discounted price, the result of consuming mass quantities is pinchilada.
Hey, Its pinchilada day.. Anyone hungry?
Man, I got to take a shit. Yesterday was pinchilada day.