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Extra-strength, super Bible-beaters, that adhere to the "no music, dancing, makeup, haircuts, smiling, etc." religious beliefs. They believe anyone that doesn't attend their church to be headed for an eternity in hell. A word-play on "Pentecostal".
"Look, there's the Uber-Costals! They're frowning on us for wearing pants & makeup," said Tina.
by Sugarsqueeze October 25, 2005
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