The theory that, no matter where you are, if you shout out "IT'S THE FINAL COUNTDOWN!" someone, somewhere will repond with "Duh duh duh duh...duh duh dut dut duh" I.e. The sound of the music which immediately follows the lyric.
John: Hey Mark, wanna try out the final countdown theory?
Mark: But we're in an old people's home!
John: So what, it'll still work!
Mark: Alright fine then, "IT'S THE FINAL COUNTDOWN!"
Voice in the distance: Duh duh duh duh...duh duh dut dut duh
John: HOLY SHIT OLD MAN, YOU ARE JUST THE COOLEST.
by greenie29892 April 10, 2010
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-noun

The effect that listening to the Europe song "The Final Countdown" has on mundane, boring everyday activities, by making them instantly more exciting and entertaining.
I'm not that good at magic, but The Final Countdown Effect makes me seem more credible as a magician.
by Marry_Me November 16, 2010
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