A galloping nonsense rhyme built largely from made-up words like gamberally and niggledy piggledy. The fun is entirely in the sound and speed of it, not in the sense.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
Master I have, and I am his man,
Gallop a dreary dun;
Master I have, and I am his man,
And I'll get a wife as fast as I can;
With a heighty gaily gamberally,
Higgledy piggledy, niggledy, niggledy,
Gallop a dreary dun.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition