A phrase applied by authority figures in college dormitories to disuade the use of certain things (such as water fountains, bathrooms, or kitchens) for extended periods of time when, in truth, the appliance or room in question is actually in perfect working order.
This is usually a form of punishment implemented by people in positions of authority within a residence hall to teach the students a lesson.
Note, this tactic has had mixed results, in extreme cases of failure inciting riots and all out mayhem.
Someone threw up in the second floorwater-fountain and then--after it was cleaned and visibly functioning--deemed "out of order".
When someone fails to carry out the operations in a math problem correctly, often because they couldn’t remember the rule, or they use their own oft-flawed logic to do so.
John flunked his recent classtest, because he’s a victim of out-of-order math—he repeatedly misused the BODMAS rule to simplify arithmetic expressions, and misapplied the procedure to find the inverse of a matrix.
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.