A little girl asks her mother if she can take the dog for a walk.

Not right now darling, she's on heat.

Please mum i'll keep her close.Go and see your father, he's down in the shed.

Dad, can I take the dog for a walk.

Not right now darling, she's on heat.

Please dad i'll look after her. Dad thinks a while. Ok wait a few minutes, and i'll show you an old trick.

Your grandfather taught me this trick. We get a rag with some petrol on it, and rub it around her tail. this stops her scent. Smart your granddad was.

So and hour later, the little girl returns home without the dog.

Where's the dog darling, where's the dog. Your mother will kill me for letting you take the dog for a walk.

Its ok dad.

She ran out of petrol. So another dog is pushing her home.