Every since I was 5 years old, I always thought it was:
maresy-dotes and dosey-dotes
and little lamesy-divey.
a kiddledy-divey, do
It is now clear to me that, in fact, it goes more like this:
Mares eat oats and does eat oats
and little lambs eat ivy.
A kid will eat ivy, too,
Whew. Well… on to the next thing.