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Worse than an epic fail. Septic fail comes from a mix of Epic Fail and Septic Tank. (a septic tank is used to store/dispose of human waste. in place of a sewer) Septic Fail is to be used in extreme cases only. terminology may vary, (in fail order) fail epic fail septic fail super septic fail nasty septic fail super nasty septic fail epic septic fail and finally super epic, mega septic stink-nasty fail
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