Angels on pin heads

Posted by Pamela on May 09, 2002

In Reply to: Smart Alec posted by James Briggs on May 09, 2002

Sorry, can't figure out how to set up a new post so I'm doing a new one as a follow up.

Does anybody know what the expression
'Counting angels dancing on pinheads' means and in what context is it used?
It can be said a few different ways, like,
Angels on pinheads, angels dancing on the head of a pin etc.