Top Definition
Old, crusty, or worn out.

"Look at that old bag o' bones over there. She's really festered out."

Broken down; out of commission, on the fritz.

"What happened to your car Sally? Oh, it's festered out again. I think my hubcaps are bad."

What happens to a large pimple with a big white head that grows in the middle of your back that you can't get to.

"Dan what the hell's that on your back? It's all festered out."
"Tish used to be a good lay in the sack, but now that everybody's had a jab at it, she's all festered out."
by Scotty Smith October 30, 2007

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