The Disco Smile occurs when someone cranks the BASS and TREBLE way up on their stereo system's equalizer, leaving the mid range very low. On a graphic equalizer, this curve will look like a mouth smiling.

You have now achieved the disco smile. Good job, I hope you didn't *really* want to hear everything that song had to offer.
Lauren: Hey Chris, turn on your car stereo!

Chris: Okay! *click*

Lauren: ARG! Why are my ears bleeding, and I still can't even tell what song it is? Oh, that's right, you're a fan of the disco smile.

Chris: Guilty as charged.
by Kikipopo September 9, 2013
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