I always used to know a nursery rhyme version:

a frog he would a woo-ing go
hey ho said roly
a frog he would a wooing go,
whether his mother would let him or no,
with a roly-poly gammon and spinach hey ho said anthony roly!

but i think its a different song altogeher.

but hey! frog in - frog out!

xLx