The context of the following conversation is Sydney is the executor of Remy's estate, as the latter is disabled.:
Sydney says I have to help my Uncle Remy..
The friend responds Why is that?.
Sydney responds I'm the executor of his estate..
The friend responds That's a lot of responsibility.  Why does he need one?.
Sydney responds He's getting a bit senile.  Most of the time he is all right, but there are times he might buy the Golden Gate Bridge..
The friend responds At least, you probably won't do that..