Kusa(草) is japanese slang for LOL, it also means grass.

BIG Kusa = BIG LOL /or/ LOLLLL, meaning something is extremely funny
Person 1: Did you see the stream last night? Tomoe-san's kill was blamed on Sukoya san in among us. Talk about bad timing wwwww

Person 2: BIG KUSA
by vTerumi April 9, 2021
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The man himself. It is a symbol that only the most honorable can gain.
The man is very noble. He is a true Big Kusa 草.
by Juju61 May 17, 2021
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