Ah The paddy whack
Paddywhack (also spelt Paddywack) or Nuchal ligament/Ligamentum nuchae, is a strong elastic ligament or tendon in the midline of the neck of sheep or cattle which relieves the animal of the weight of its head. It is pale yellow in colour. The name is derived from the corruption of paxwax (originally faxwax Old English hair + to grow).
This old man, he played one,
He played knick-knack on my thumb.
With a knick-knack, paddy whack,
Give a dog a bone,
This old man came rolling home.