Blonder: We need help. We’re three blondes changing a light bulb.
Operator: Hmmmmm. You put in a fresh bulb?
Operator: And the switch is on?
Blonder: Yes, yes.
Operator: And the bulb still won’t light up?
Blonder: No, it’s working fine.
Operator: Then what’s the problem?
Blonder: We got dizzy spinning the ladder around and we all fell and hurt ourselves.