It's time to go to sweep.
or
They turn from notating nuclear spins to notating unclear puns.
or
A porcupine with split ends
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
Climb up a tree and act like a nut
or