nsfl
NSFL stands for Not Safe For Life, an Internet acronym used to label content that is extremely graphic or disturbing. It is usually employed as a stronger warning than NSFW (Not Safe For Work) and is common on image boards, video sites, and social media. Content labeled NSFL may include graphic depictions of violence, severe injuries, accidents, or other material intended to provoke a strong emotional reaction. Because of the intensity, NSFL is used to help users decide whether to view, share, or avoid the material.
Origin and usage: The exact origin is informal and not documented; the term emerged in online communities
Safety and reception: Platforms may apply age restrictions or warnings for NSFL material; many communities discourage
See also: NSFW, gore, content warning, trigger warning, media literacy.