"FUCKgays.mp4" (often stylized with various capitalization) is a notorious and malicious file that gained notoriety in the early-to-mid 2010s on message boards like 4chan, as well as on Discord and YouTube. Overview and Mechanics
Most modern social media and communication platforms (like Discord and YouTube) have automated filters to flag and remove these files because they violate terms of service regarding "harmful content" and "seizure-inducing" media.
While many versions were just "scary" videos, downloading files with such names from untrusted sources often carries a high risk of containing actual malware or viruses.
After a few seconds, the video abruptly cuts to a high-volume, distorted scream accompanied by a flashing, disturbing image (often a "Jeff the Killer" variant or a distorted face).
Some versions of this file were specifically encoded to exploit vulnerabilities in media players or Discord's video previewer. These versions could cause an application to freeze, lag, or crash entirely upon reaching a specific frame, a tactic known as a "crash video." Cultural Impact and Safety
Due to the rapid, high-contrast flashing common in these files, they pose a significant risk to individuals with photosensitive epilepsy.