Something I've always wondered

I first saw Chevelle perform in April 2005 at the Metroplex in Little Rock and 2 days later at the University of Arkansas. They played this really awesome, heavy song that I haven't heard at any show since. Also, it's not on any album. I was wondering if anyone might know the song. I've always thought it might be a cover. The only lyrics I think I could decipher were something like "which side I don't know" and "over here the grass is greener".