under_18 NSFW

A circular yellow sign with a red border containing the black text UNDER 18.
Free for your Discord server

What does the under_18 emoji mean?

A blunt warning sign for when the conversation gets a little too mature.

This emoji mimics the classic age restriction warning sign, often used in online communities to signal that content is intended for an adult audience. It is frequently deployed in Discord servers to jokingly or seriously flag NSFW discussions, edgy humor, or mature topics that might not be suitable for younger users.

When to use it

  • Flagging mature content in a public channel
  • Warning friends about potentially explicit jokes
  • Setting boundaries for younger server members

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How to add this emoji

Add to Discord
  1. Click Add to my server above and pick a Discord server you manage (CommunityOne must be installed).
  2. Or download the file: open Discord → Server Settings → Emoji → Upload Emoji.
  3. Give it a name and save. You need Manage Server (or Create Expressions) permission.
Add to Slack
  1. Download the under_18 image.
  2. Open the Slack emoji picker and click Add Emoji.
  3. Upload the file, name it, and save.
Add to Revolt/Stoat
  1. Download the under_18 image.
  2. Open Server Settings → Emojis in Revolt or Stoat.
  3. Upload the file and name your new emoji.
Add to Guilded
  1. Download the under_18 image.
  2. Go to Server Settings → Emotes in Guilded.
  3. Upload the file and give it a name.