Inbred people such as those depicted in the film "The Deliverance".
Look at those Yellow Hammers sodomizing canoe riders down by the river!
by Michelle Hammons September 7, 2004
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In rural Kentucky, after men went off to war and died in the 1940's, mothers needed to reproduce and so they had sex with their own sons, having inbreed children. These inbred children had multiple defects, and earned the nickname "Yellow Hammer"
Sandy-"Why does Cleetus have so many mental problems?" Duane-"Oh, you didn't hear? He's a yellow hammer."
by Menace5 August 25, 2009
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A light skinned female, usually of African American heritage. A synonym for yellow bone which itself is a variation of red bone
Here's an incident that got me sent to the slammer; I'm in the club rappin to this yellow hammer. This bitch was holdin', severely cut; so I'm rappin to her right, to see if she'll fuck.

Geto Boys/Willie D "Read These Nikes"
by BNitti April 19, 2006
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A person of the trades (auto mechanic, carpenter, plumber) who knows virtually everything about his particular line of work, but little to nothing about anything else. This can include life itself. While not considered a derogatory term by any means, it *implies* said person would do well my expanding their horizons.
Darn this carburetor! I can't figure it out. I gotta call yellow hammer over and have him take a look at it.
by Harvey B. February 9, 2009
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"so im rappin to this yellow hammer, right? to see if she'll fuck..."
by sir black-a-lot September 19, 2003
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