Get a life!

I've often seen the comment "Get a life" on electronic discussion forums. It usually indicates that the person who writes it disagrees with what someone else has said, but can't be bothered to get to grips with the issues, so it has become a meaningless cliche.

But here is an indication that at one time the phrase may have had a real meaning: Changing the World (and other excuses for not getting a proper job...): Get a First Life!