Top Definition
1. One of a clan of obese, slovenly individuals taking no pride in physical appearance, health, or food consumed, uniquely characterized by his innate ability to act like a complete braggadouche at every social opportunity and love of dice-based role playing games.

2. To behave as same.
1. That Nell Carter sure is a jimernsberger.

2. That guy really jimernsbergered me when he spoke ill of me behind my back and then had sex with my male dog.
by Reality check #1 May 01, 2011
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