Short Version:
Down by the banks of the hanky panky
Where the bullfrogs jump from bank to bank
Where the eeps, ops, sodapops
Hey Mr. Willie and he went ker-plops

Long Version:
Down by the banks of the hanky panky
Where the bullfrogs jump from bank to bank
Where the eeps, ops, sodapops
Hey Mr. Willie and he went ker-plops
With a cherry on top
Here come the animals two-by-two
Hippopotamous and Kangaroo
Kaboo Kaboo
Hippopotamous and Kangaroo