A nursery rhyme

Can you name this nursery rhyme?

"A Lilliputian female who was an unmarried Homo sapiens seedling decided to moor herself on a bit of volcanic detritus in order to gor­mandize on casein and other forms of coagulation. The next cognitive realization she had was when an arachnid arbitrarily decided to settle on the same volcanic detritus, resulting in her terrorized withdrawal."

From one of my kids books entitled Tricky Mindtrap Puzzles