## What does it mean?
— **IYKYK** stands for "If You Know, You Know." It is used to indicate that something is understood only by a specific group.
## Etymology (where it comes from)
— The phrase comes from **English**.
— It combines "if," "you," and "know" to create a short expression.
## Historical origin (in a few words)
— This slang became popular in the **early 2000s**.
— It is often used in social media and youth culture.
## Earliest records
— The phrase appears in online forums and social media posts.
— It is often used in memes and casual conversations.
## Variants and usage by country
- IYKYK (common in English-speaking countries)
- IYKYK (used in social media worldwide)
- Variants may include similar phrases or abbreviations.
## Related words
- **FOMO** (Fear of Missing Out)
- **YOLO** (You Only Live Once)
- **BFF** (Best Friends Forever)
- **TBT** (Throwback Thursday)