my dad would often say:

fuzzy wuzzy was a bear,
fuzzy wuzzy had no hair,
fussy wuzzy wasn't fuzzy, was he?

and something like this:

Yehudi

The other day upon the stair,
I met a man who wasn't there,
He wasn't there again today,
gee, i wish he'd go away!

my mom used to say:

do it quick,
in 3 shakes of a lamb's tail

and: if we sit down to eat, they will come
(if waiting for someone to join you for dinner)

grandma would say:
I'm filled to sufficiency,
any more would be a superfluity.