Top Definition
When obliviously lip synching along to an mp3 player mid treadmill session progresses to belting out a line or a whole tune in a busy gym environment.

The Treadmill Karaoke-er may be oblivious to their faux pas, and may result in declarations of love, hate or violence to other gym users depending on musical preference.
Dude 1: Did that girl on the treadmill just ask me to put my hands up if I'm in love?

Dude 2: Hmmm, I think she's just doing some treadmill karaoke to JLS
by swallmeister December 30, 2010
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.