A
mathematical concept. The
ratio of available
flathead screwdrivers to available
Phillips screwdrivers when only a Phillips will do. A
big number.
Can also be used to describe the
ratio of
flathead screwdrivers to
flathead screws in the
universe. Still a
big number.
Also, apparently, the amount of
reputation points you will lose for creating a
node called
The Flathead Number. *Still* a
big number.