Related:

• it is really a discussion of how many angels can dance on the head of a pi
  and not really interesting unless those involved in the discussion are drunk or graduate students - two states of roughly similar incompetence....
• How many consultants will fit onto the head of a pin?
• How many angels can dance on a light bulb? It depends on the dance step.
• How many pinheads can dance on an angel?
• How can you tell the dance from the dancer?
• And can you teach me to how to dance real slow?
• How about a pin the missile on the Iraqi leader game?
• How many folk-dancers -- does it take to change a light-bulb?
  Just one, but they break a lot of bulbs, when they drop everything to get onto the dance-floor when they hear the introduction to a dance they want to do....
• As sharp as a marble / bowling ball / beachball / pin head / bowl