I like this one, perhaps for nostalgic reasons. I first heard it in 1967, not the same but not much different, and with the punch line, "Step aside girls, I have to gargle!"
I believe the old joke about the secretaries had been related just before: One secretary says to two other secretaries, "Last week I found a box of rubbers in the bosses desk and poked a hole in each one." One secretary laughed, the other fainted.
Appropriately, this was among
sophomores in high school. And for those of you doing the math to determine my age, yes, you're correct, I'm 29.
--Percy