Seems that Julian has sliped into Alice in Wonderland...
`But I don't want to go among mad people,' Alice remarked.
`Oh, you can't help that,' said the Cat: `we're all mad here. I'm mad. You're mad.'
`How do you know I'm mad?' said Alice.
`You must be,' said the Cat, `or you wouldn't have come here.'
Alice didn't think that proved it at all; however, she went on` And how do you know that you're mad?'
To begin with, said the Cat, a dogs not mad. You grant that?I suppose so, said Alice.
Well then, the Cat went on, you see a dog growls when its angry, and wags its tail when its pleased. Now I growl when Im pleased, and wag my tail when Im angry. Therefore Im mad.
I call it purring, not growling, said Alice.
Call it what you like, said the Cat.