My Humble Opinion:
In a practical sense, it's really a meaningless phrase used mainly for the emotional reaction it evokes. Could be any of:
- a classic "put down" from any thoughtless, arrogant, self-satisfied person to anyone else who doesn't fit in with their particular definition of "smart" or "cool";
- an indication of impatience, or gesture of dismissal (a way of saying "I can't be bothered with you")
- the feeling of a generalist toward a specialist of any sort, especially in a computer context... (possibly an element of envy involved?)
- a flippant phrase used between good friends who are just kidding around... and are perhaps just a tiny bit anxious deep down inside that what they are interested in (or obsessed with) isn't considered quite "normal" ("normal" being another nasty word that should be used with extreme caution <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />!);
- a phrase used by someone in a self-deprecating manner ("I really need to get a life".), which may just mean that they are perhaps a bit unhappy with the way their social life is going at the moment...
