Only one, but they get three tech. reports out of it.
or
He was in shock for a week.
or
They screw millions of bulbs every day, but when it comes to your bulbs, there's no record.
or
Five. Four to decide which way the bulb ought to turn, and . . .
or
Rootbeer.
or
Five: One to change the bulb and four to pull the ladder out from under him/her.
or