Sorry again, my post above has dropped a potato
"5 potato, 6 potato, 7 potato, more."

Which reminds me of the, not so much a rhyme more a trick
"After everything I say you have to say 'dropping potatoes'"
Went up 1 stair .....
Went up 2 stairs ....
Went into a room .....
Looked out the window ....
Saw a donkey ....

This one was used when "After every thing I say you have to say 'just like me'" then the same chant, had ceased to catch anyone out.