An Amphigouri riff about a
pocket-watch lost in the tall grass,

 Alas! And do cruel pirates sail
‘mongst towering waves of grasses green?

Perhaps!  Frogs jade, and pimpled pale
half frightened, dive to depths unseen.

Indeed! I plead, may snail and whale
give credence where, and what they’ve seen.

Oh, treasure lost in verdant dale,
unctuous yon ticking tangerine!

Return! I, lest in quest should fail,
impersonate a submarine.

(Just for fun, each stanza begins with an exclamation.
As an additional poetic Easter-egg, the first letter of each line is an acrostic.)

Amphigouri

am·​phi·​go·​ry | \ ˈamfəˌgōrē, amˈfigərē \ variants: amphigouri \ ˌamfə(ˌ)güˈrē \

Definition:

 a nonsense verse or composition : a rigmarole with apparent meaning which proves to be meaningless