<font color='#000000'>I guess "serious listening" is when you put on your smoking jacket and sit around with your friends sipping Perrier and take turns making up new terms, er, I mean dissecting the performance into audiophool-approved terms (eg PRaT, action, bloom, etc). During the exercise, the point is to demonstrate that you can hear lots of things that ordinary wool-eared music fans (as opposed to audiophiles) can't hear. Even if said qualities only exist in your head.
Alternate definition: any time spent knocking back a few brews with a couple of good friends while listening to the Clancy Brothers & Tommy Makem!</font>