NahuBallu is a mispronunciation of the word Nagoobalhu. The word is used in this fashion mostly by the Bangladesh workers in the Maldives. It also once became a meme after the wide spread of a screenshot which showed the conversation of a Maldivian complaining about a Bangladesh person being dishonest/cheating on a Maldivian. This screenshot was shared on Facebook by the famous page "The Logical Maldivian" on January 19th of 2018.
by MvKaleAmma February 20, 2019