What is the meaning of the expression 'better you than me'?

'Better you than me' basically means that I don't care about you( as long as it doesn't affect me). For example, you and a friend are stealing a car. You get busted, but you get away and leave your friend behind. he gets booked has a trial and is put away for ten years. He doesn't rat you out. It's better he got caught than you didn't.

It is something you say when someone is in a situation that you don't want to be in. This does not have to be something that they don't like -- just that you don't. For example, a friend might tell you "I'm hosting a party for my three year old son and inviting his whole class over," and you'd say "Better you than me!" because you'd hate to have a house full of three year old kids.