"Hello, you look busy."
"I am busy. Are you buying this or not?"
"On one condition. It's a gift to Auntie Madge Moody. If it falls to pieces, I want her to be able to follow up a complaint and, if she wishes, to reject the thing. It would be embarrassing for her to have to come back to me to do it for her. I can't have you telling her to go away because she was not a party to the contract. So please write on the receipt "This is a gift for third party Auntie Madge Moody. We agree she shall have all the rights and remedies in law which our customer has." Do that and I'll buy."
"I'll just fetch the manager."
You'll find much more in Breaking Law.
