Why do Japanese people use the kanji "草" (grass) to mean laughter?

I'm not mad or anything — I genuinely just want to understand.
If anyone has a real explanation, I’d actually appreciate it.
If not, that’s fine too.
¯\_(ツ)_/¯ Guess I’ll just keep being confused while y’all bark.

Why do Japanese people use the kanji &quot;草&quot; (grass) to mean laughter? (22)

Why do Japanese people use the kanji "草" (grass) to mean laughter? (22)