You have the opening lines correct, but I've heard the following lines:

His hair was made of spaghetti, spaghetti, spaghetti, and his hair was made of spaghetti and his name was Achin Drum...

Now insert eyes made of meatballs

Then sing... "He played upon a ladle, a ladle....

Now insert nose made of cheese
Now insert mouth made of pizza...

and so on...