Executive Producers don't screw in a light bulb, they screw in a hot tub.
or
Because it goes good with chips.
or
They screw millions of bulbs every day, but when it comes to your bulbs, there's no record.
or
The question is irrelevant, since you couldn't find the dolls even if you knew how many. (Note: Well, this was a good joke in 1983-84. . . .)
or