Lets write a Limerick, one line at a time.

[klondike]

She turned one into a donkey, another into a toad
She cackled wildly as she set off down the road 
Then her lucky black cat fell off her broom
And down a chimney into Reg's living room 
It landed well, it's legs just bowed

Then leapt up all teeth and claws

[GrannyMac]

Then leapt up all teeth and claws
Blood dripping from its jaws
A scary sight, the others ran

[klondike]

Then leapt up all teeth and claws
Blood dripping from its jaws
A scary sight, the others ran
All except old fat Stan
This caused that wild cat to pause

For fat Stan was more than large

[Mups]

For fat Stan was more than large 
He was in fact, a bit like a barge
With hands the size of a dinner plate
The witch's cat didn't know its fate

[GrannyMac]

For fat Stan was more than large
He was in fact, a bit like a barge
With hands the size of a dinner plate
The witch's cat didn't know its fate
It thought the witch was still in charge! 

Fat Stan stomped towards the puss
And said 'leave, don't make a fuss'

[klondike]

Fat Stan stomped towards the puss
And said 'leave, don't make a fuss'
That cat gave Stan one careful look
Gave a miaow and off it took