Final answer:
DJ may have been using the black construction paper to experiment with light and shadow or to simulate a 3-D effect while watching a movie, although the specific context or reason is not provided in the question.
Step-by-step explanation:
The question is related to an individual, referred to as DJ, holding a piece of black construction paper under his nose while watching a movie. This action may not be directly related to the content given for reference, which includes various unrelated scenarios. However, based on common practices and knowledge about 3-D movies, it is plausible that DJ was experimenting with light and shadow or attempting to create a makeshift 3-D effect by filtering light and depth perception, similarly to using 3-D glasses in a movie theater. In the absence of specific context or a direct link to the provided materials, we can only theorize about DJ's intentions.
Given the various contexts in which paper is mentioned or used in the provided reference materials, including changing the appearance of things, creating effects with light, or altering perceptions, DJ may have been influenced by these concepts, creatively applying them to his experience while watching the movie.