Said by the King of All Cosmos in Katamari Damacy, with a long pause between each syllable, as you roll up a long string of banana bunches. In the GameFAQs fad, each of the 3 parts of the word are said in 3 different posts, bolded, a la a Captain Planet summon. The fad was originally Amazing Telephone writing the whole thing himself (with blank lines between the three syllables), but agasonex and Aeon Azuran added the practice of a different user posting each part.

BA NA NA is also another alt of Icon.