If you have ever spent time scrolling through Japanese Twitter (X) or browsing 2channel, you have likely encountered the character "w" littered across the screen. While this represents a laugh, the evolution of this expression has birthed a phenomenon known as Kusa (grass), and its intensifier, Kusa-sugiru. But what does it actually mean, and why are Tokyoites talking about "grass" when they see something funny?
🔊 Listen to Native Pronunciation
Tap below to hear how locals naturally pronounce it in Tokyo:
The Origin: From Laughter to Lawn
To understand Kusa-sugiru, we must look at the roots. In Japanese internet culture, the letter "w" is used to signify laughter, stemming from the word warau (to laugh). A long string of "wwww" looks like blades of grass on a screen, which led users to call it kusa (grass). Kusa-sugiru (literally "too much grass") is the natural evolution, meaning "this is so funny it has grown into a literal field of grass."
Textbook vs. Reality
No Japanese textbook will ever teach you this phrase. If you use it in a formal setting, you will be viewed as immature or socially unaware. In reality, Kusa-sugiru is strictly for casual, digital, or peer-to-peer communication. Using it with your boss or a client is a catastrophic error in Kuuki wo yomu (reading the air). It signals that you are not taking the professional environment seriously.
Realistic Dialogue Breakdown
Friend A: 見てこれ、猫が変な顔してる！ (Look at this, the cat is making a weird face!)
Friend B: え、なにこれ！草すぎるんだけど！ (Whoa, what is that! It’s so funny! [Literally: It’s too much grass!])
Analysis: Friend B is using Kusa-sugiru to express genuine, high-level amusement. The tone is excited, informal, and deeply rooted in digital camaraderie.
Comparison Table: When to Use What
| Context | Appropriateness | Alternative Phrase |
|---|---|---|
| Boss/Senior | Forbidden | 面白いですね |
| Close Friend | Safe | 草すぎる |
| Acquaintance | Risky | ウケるね |
Understanding slang like Kusa-sugiru is a window into the modern Japanese soul—a place where the rigid rules of Giri (social obligation) are briefly set aside for the sake of shared laughter in the digital space.
