Top Definition
1. To tell one or several orphans a "Yo Mama Joke"

2. Insult the mother of an individual who does not have a mother or does not know his or her mother
Inconsiderate Person: Yo mama is so stupid, she thought inertia was the black girl that lived down the street!

Orphan: I have no mother. *sobs*

Bystander: Wow that dude just maternimalized that kid
by a beatboxer March 28, 2010

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