For a long time, I thought my mother was singing,
"Mairzy doats and dozy doats,
and little lambsy divy".

A kid'll edivry, do
Wunden you?

It is a nonsense song which makes sense in a way
-- Lambs eat oats and does eat oats and little lambs eat ivy, a kid will eat ivy, too, wouldn't you? ----

if I recall correctly it was popular near the end or just after WWII. And very popular with several verses, all of which I have forgotten! No comments please on what "goes" first ... been there, done that!
wow