Balance Shift

Okay, so basically, the dude's friend had something happen to him. When asked about it, he says "his balance shifted." Now, "balance" can mean two things: either physical balance, like standing up straight, or a financial balance, like in a bank account. The joke is that the friend is making a pun, implying that he lost money or had some kind of financial trouble. Get it? I knew you would, you smarty pants.