A term used to lengthen the lasting appeal of a "Holla!". Mostly used as a way to show approval of something, the term can also be used at will and does not need to make sense in conversation. A good bro will always reply with a loud "Holla!".
Thomas: Let's go get some ribs, and watch the game.
Christian: HOLLA AMOEBA!
Thomas: HOLLLLAAAA!
Or...
Thomas: Yo, what train are you taking?
Christian: HOLLA AMOEBA!
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