The Emoji
U+1F51E ยท :underage:
Heavily ironic โ used as a parody content warning before anything mildly edgy or dramatic. Rarely taken literally.
Used sincerely to flag adult content on social media and messaging apps; also appears in Bollywood and OTT streaming discussions to mark mature content.
Taken more literally as a warning symbol; used cautiously given stricter cultural norms around adult content, often to flag anything deemed inappropriate.
Universally understood as an age-restriction marker; used across platforms to signal 18+ content, regardless of cultural context.
Used sincerely in digital spaces to flag adult content; less ironic usage compared to Western contexts, treated as a genuine content advisory.
Applied literally to mark adult content on social media; occasionally used humorously among younger urban users familiar with internet culture.
Used to mark adult content on platforms like Weibo and Bilibili; internet regulations make its usage more solemn and compliance-oriented.
Common on adult content platforms and in doujin/manga contexts to mark R-18 material; carries cultural weight due to Japan's distinct adult content industry norms.
Used to mark 19+ content on platforms; tied to platform age-rating systems and K-drama or webtoon content warnings.
Used to flag mature content on social platforms and in gaming communities; also seen ironically among younger Taiwanese internet users.
Similar to Taiwan โ used both sincerely for content warnings and ironically in meme culture among younger users.
Used to flag adult content in Facebook groups, TikTok captions, and messaging apps; occasionally used playfully in adult humor among friends.
Applied cautiously given conservative cultural norms; used to mark adult content and as a gatekeeping tool in digital communities.
Used in adult entertainment contexts and on social platforms to mark mature content; also appears in gaming and streamer communities.
Used to flag adult content online; younger Vietnamese internet users sometimes adopt the ironic Western usage in meme communities.
Used sincerely in most contexts due to conservative norms; appears in content warnings for mature films, games, and online media.
Used very cautiously โ primarily as a sincere adult content marker; anything beyond official usage risks social backlash given strict content norms.
Used to flag adult content on digital platforms; awareness of content moderation laws makes its usage mostly literal and compliance-driven.
Used to mark adult content online; also appears in social media discourse around censorship and digital freedoms.
Used both literally for content warnings and sarcastically in political meme culture to flag mature or controversial opinions.
Used in restricted digital circles to mark adult content; given internet censorship, its appearance often signals VPN-accessed content.
Used in WhatsApp groups and social media to warn about adult content before sharing; also adopted humorously in Afrobeat and street culture meme contexts.
Used both sincerely and ironically; appears in WhatsApp forwards and social media to flag adult content or mature humor.
Used with dry irony โ placed before mildly adult or dark-humor content as a winking nod to British comedic sensibility.
Used more liberally given France's relatively relaxed attitude toward adult content; appears in meme culture and social commentary.
Used sincerely in compliance with strict Jugendschutz (youth protection) norms; Germans tend to apply it literally in digital content rating.
Used both sincerely and playfully; appears in adult humor contexts and social media with a Mediterranean flair for dramatic emphasis.
Widely used in meme culture and adult humor on Instagram and Twitter/X; often ironic and paired with exaggerated comedic content.
Used humorously in meme communities and sincerely in adult content spaces; part of the broader Mexican internet humor ecosystem.
Broadly understood across Latin America as an adult content marker; ironic usage is growing among younger social media users.
Used both literally and with sardonic Aussie humor; appears in meme contexts to parody content warnings before mild or mundane overshares.
Primarily used literally as a digital equivalent of real-world age-restriction signage, mostly on early social platforms and forums to flag adult content.
Began appearing more frequently in messaging apps and social media to gate NSFW content; still mostly sincere in intent.
Ironic and meme usage exploded โ Gen Z adopted it as a comedic content warning for anything mildly edgy, detaching it largely from its literal meaning.
Predominantly ironic in Gen Z and younger millennial digital culture; still used sincerely on content platforms with age-gating requirements; dual-meaning firmly established.
The ๐ emoji depicts a prohibition sign with '18' inside, officially meaning 'No One Under Eighteen' โ used to mark age-restricted content, places, or products.
Signals edgy, dark-humor, or slightly mature content โ used ironically far more often than literally.
Sent to flag that a message, meme, or link contains adult or NSFW content before sharing in a group.
Used ironically to label anything mildly edgy, dark-humored, or slightly inappropriate โ even if not actually adult content. Often self-aware and comedic.
A standard age-restriction warning symbol used to mark content appropriate only for adults โ entirely safe in its official usage.
The emoji triggers a mild forbidden-fruit psychological response โ the restriction framing makes content feel more thrilling or exclusive, even when the actual content is benign.
The shortcode for No One Under Eighteen is :underage:
Used flirtatiously to imply things are 'getting adult,' signaling sexual maturity or hinting at NSFW conversation without being explicit.
Exercise caution when this emoji appears unsolicited in DMs from unknown contacts โ it may signal inappropriate solicitation or grooming behavior. Platforms should flag unusual usage patterns involving minors.

Appearance varies by platform and device. Google Noto, Twemoji, and OpenMoji are open-source.