Top Definition
(abbr.) Teenage Mutants Ninja Nephi

TMNNs are the teenage cloned spawns of Nephi (From W.Aust) & Helor. They form the basis for their dark legion of warriors.

The mere mention of TMNNs to most people can cause great amounts of pain / suffering / displeasure / fear to occur.
Run, save yourselves. The TMNNs are here. *insert blood curdling scream*
by Nephi April 19, 2005
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