Another local word that makes me chuckle is 'youngun'. I recently had a baby and frequently get asked 'how's the youngun' doin'?'. While growing up in Illinois I never thought I'd have a 'youngun'.

There are a couple of odd terms that I've learned since working in manufacturing realm....don't know if they are southernisms or just plain slang.
1) Pisser - word used for a trim squirt (a high pressure stream of water used to cut a trim off a paper machine.
2) Peckerhead - word for a junction box on a motor (this is where the wires from the motor connect to the pump)

Nothing like being female in a male-dominated industry surrounded by peckerheads.