He's heard the movie referenced before, and may or may not have actual interest in seeing the film for himself, but it's safe to say that Locus looks distracted upon arriving at movie night. His eyes constantly move over the room, bouncing from person to person, as though looking for something in particular.
Eventually, he finds a spot on the couch to settle, though he still appears tense for most of the time up to the start of the movie.
Locus
Eventually, he finds a spot on the couch to settle, though he still appears tense for most of the time up to the start of the movie.