The one my Dad used to tell us kids when we were small went like this:
Mary had a little lamb
Its fleece was black as soot
And into Mary's bread and jam
His sooty foot 'e put.
It made us hoot, but then we were very small...
Hehe...our Dad used to do stuff like that too! I remember one that started..
"Sparkle sparkle little twink,
Who the hell you am I think..."
but I can't remember the rest of it!