The story
Initialism of not safe for Tumblr, in reference to the platform's banning of adult content.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Synonym of NSFW. Full definition →
Initialism of not safe for Tumblr, in reference to the platform's banning of adult content.
Etymology from Wiktionary, CC BY-SA 4.0.