" 'What's that?' he snarled, staring at the envelope Harry was still clutching in his hand. 'If it's another form for me to sign, you've got another-'

'It's not,' said Harry cheerfully. 'It's a letter from my godfather.'

'Godfather?' spluttered Uncle Vernon. 'You haven't got a godfather!'

'Yes, I have,' said Harry brightly. 'He was my mum and dad's best friend. He's a convicted murderer, but he's broken out of wizard prison and he's on the run. He likes to keep in touch with me, though... keep up with my news... check I'm happy...'

And grinning broadly at the look of horror on Uncle Vernon's face, Harry set off towards the station exit, Hedwig rattling along in front of him, for what looked like a much better summer than the last. "

~Harry Potter and the Prisoner of Azkaban, J. K. Rowling~