The gnarble almost made it to the surface of the sea, But the plink chomped down and swallowed him as if he were a pea.
Hardly had the word "brigands" crept into my mind with an accompaniment of heart-beats something like the plink!
So the gnarble swam around inside, trying very hard to think, And while he did, his floppy tail was tickling the plink.
1941, imitative. As a noun from 1954. Related: Plinked; plinking.