There's a song in Song Fest (the 1954 edition redacted by Dick & Beth Best, anyway) called "She Told Us So" or "She Told Me So" (or at least with a refrain that starts that way. I can't find my Song Fest so I can't cite chapter and verse, and I can't seem to find it in the DT. It is, in part, reminiscent of My gal's a corker, she's a New Yorker, but it's not the same.

Parts of it as I recall go:

How she always used to rave
...
in the lectures that she gave
how to beha-a-a-ave
Now we always take our bath
even if we miss our math
How in the world do you know that?
She told us so.

Now we are older,
we take it colder
up to the shoulder,
what if we mou-o-oulder
This we must do every day
Otherwise we pass away
How in the world do you know that?
She told us so.

Let us pause in admiration
of maternal abnegation
in Amoeba's propagation
of her genera-a-ation.

something rhyming "little rabbits" with "scientific mating habits"

How we always used to hate
to be told to sit up straight

and the recurrent end to each stanza

How in the world do you know that?
She told us so.

And then there are a bunch of college-specific stanzas about dating partners, ending the same way but "me" instead of "us", such as the one I cited in the "Corker" thread about MIT girls, and others like

My gal's from Thmith,
Thee talkth like thith
...
And in my future life,
she's going to be my wife.
How in the world do you know that?
She told me so.

My guy's from Yale,
He went to jail
for drinking too much
gin - ger a-a-ale
And in my future life,
I'm going to be his wife.
How in the world do you know that?
I told him so. (?)

I would have thought by now everything in the '54 Song Fest would have been DT'd, but I guess not.

Haruo