rather close for comfort

1. So physically close as to cause worry. Typically used of dangerous or unwelcome things. The way these planes fly so low over the house is rather close for comfort, don't you think? My neighbors and I all feel that the new shopping center they're planning near our neighborhood is rather close for comfort.

2. So narrow a margin as to increase the risk of error or deviation. Having only $20 in your bank account is rather close for comfort, if you ask me.