When you’re crunched for time but really need to clear the loading docks, a sort of panic can set in. This is especially true for teachers. The time afforded between classes in minimal, and sometimes you can’t just wait for that free period. You have to make a dash between classes and hope for the best.
While sitting to expel your brown matter in this particular case, there are always the panicked thoughts of “Will I make it?!” going through your head, as well as what the consequences of taking too long could be. Trying to remain calm is much easier said than done. As such, managing to get in, get unloaded, get clean, and get out in that 3-4 minute span brings about a sense of satisfaction that will brighten your mood for the remainder of the day.
Unlike the open door dump, which is easy to pull off given the right circumstances, the forced express dump is a dangerous game, so I cannot in good conscience go ahead and recommend trying it. However, should you find yourself in that precarious position, remember the satisfaction of completing the task at hand.