This not only gives a fresh perspective to proceedings but also adds much humor to what otherwise could have turned into a quite depressing six minutes.
What do the characters want versus need? A short film has a running time of 40 minutes or less, including all credits, with many shorts not surpassing 10 minutes, for festival scheduling ease. Again, a short film is not a tease for a larger story.
And yes, short films still have acts.
However, the ones which get in and get a chance to compete in the first place are usually the ones which clock in at ten minutes or less. It is NOT a tease, nor is it a sizzle reel or a trailer.
For some reason, a lot of short films are built around twist endings, a last-minute revelation that the rest of the story has been building to. What makes today different than any other day for the main characters?