Big enough

An elderly man with glasses stands in a dim, decaying room, his face filling the frame in a close-up. A gaunt, bald man with a grotesquely wide-open mouth appears, screaming directly into the older man's face, causing the older man to recoil and turn his head in terror. The scene loops, showing the confrontation from slightly different angles, with the screaming figure dominating the frame and the older man reacting with fear. The setting is a dark, dilapidated interior with crumbling walls.