How many blacks -- does it take to change a light bulb?

Related:

• How many seventies disco dancers -- does it take to change a light bulb?
  Two. One to boogie up the ladder and one to say "Get...
• How many blondes -- does it take to change a light bulb?
  Three. One to hold the light bulb, two to spin the...
• How many Microsoft technicians -- does it take to change a light bulb?
  Three: two holding the ladder and one to screw the...
• How many lawyers -- does it take to change a light bulb?
  Three. One to climb the ladder, one to shake the ladder...
• How many safety inspectors -- does it take to change a light bulb?
  Four. One to change it and three to hold the ladder...
• How many old macrobiotics -- does it take to change a light bulb?
  Five. One to change it, three to hold the ladder, and...
• How many lawyers -- does it take to change a light bulb?
  Three. One to change it and 2 to keep interrupting...
• How many drummers -- does it take to change a light bulb?
  One .. Two, and a-one two three...
• How many police -- does it take to change a light bulb?
  Three. One to change it and two to direct traffic (eh...