(Start slow, get faster every repetition)

Glink* glunk went the little green frog one day. Glink glunk went the little green frog. Glink glunk went the little green frog one day, and his eyes went glink glunk too.

Honk, honk went the big Mack truck one day. Squish squish went the little green frog, and his eyes don’t go glink glunk anymore ‘cuz he got ate up by a dog. Woof, woof.

 glink rhymes with blink
 another variant uses “mmm-ach went the little green frog”