Top Definition
Someone who is highly ineffectual, talks a big game, but produces no results and rides on the coat tails of others.
Our Boss Big Joe should have banged Nancy from accounting, God knows she needs a good boning, but he is either gay or has a Nerf Penis.

The harder I work, the fatter/lazier my co-worker Mark gets. He's a real Nerf Penis.
by Stoogin-Poogins August 12, 2006
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