: It is designed to embarrass the viewer if played in public or around family and friends. Security & Social Risks
: While often just a prank video, downloading .mp4 files from untrusted sources can occasionally be a vector for mobile vulnerabilities or phishing links. MoanInEars.mp4
: If a "full movie" or "long clip" is only a few megabytes, it is likely a prank or a virus. : It is designed to embarrass the viewer