Your friend's daughter constantly interrupts your conversation, but your friend ignores this impolite behavior.
What you're tempted to do: Tell the child she's being rude, then suggest your friend teach her some manners.
What you should do: Address your friend, not her kid. "Ask, 'Do you need to go help Lauren? Because I'd be happy to continue this conversation in a few minutes," says Peggy Post, coauthor of Emily Post's The Gift of Good Manners: A Parent's Guide to Raising Respectful, Kind, Considerate Children. This is a subtle but clear way to send the message that you're frustrated by the behavior and feel she should correct her child.