A Nium Nium is a sound made by the small Plankton looking creatures that crawl out of the craters of a persons head... this person is usually very greasy and lacks communicational skills. The problem is to catch one of the NiumNium you have to place a jar on the said persons forhead, this takes time and precision.
Oh no! "Nium Nium Nium" I can see another load escaping quick call the nium Nium hunters and bring the jars!!! There she blows!
by thekushneorofcraigo April 03, 2011

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