Dob and Mob

There was a man,

And his name was Dob,

And he had a wife,

And her name was Mob.

And he had a dog,

And he called it Bob,

And she had a cat,

Called Chitterabob.

Bob, says Dob;

Chitterabob, says Mob.

Bob was Dob's dog,

Chitterabob Mob's cat.