A greeting made by a vtuber with an illness that makes her eat tarantulas and scorpions.

Haachama Chama means crazy or messed up. It originally was a nickname for a certain vtuber. Then was later recognized universally as crazy. If you are Haachama Chama you are crazy/messed up. If you try to translate Haachama Chama you will get crazy or messed up. はちゃまちゃま〜