Lyric discussion by Bravura 

Cover art for Testing 1,2,3 lyrics by Barenaked Ladies

I'm going to agree with wrion. It's got to be about Ed Robertson wanting to move on from his past. The Barenaked Ladies have very much changed their sound since Maroon. So he's saying that he wants to, sort of, leave the old days behind and try something new. But he'd also like to go back and redo some of the things he'd done.

Awesome song.