kusa 草 - Slang

In Japanese, kusa 草 means "grass," but it's also a Japanese internet slang for "lol," used when you're laughing at something (someone's joke, maybe.)

If you're wondering why kusa 草 means "lol," that's because of another internet slang: wwww at the end of phrases, which also means "lol." That sequence of w's close to each other looks like a drawing of grass blades, so kusa, "grass," is now also used in place of them.w