You were born with a solid belief in hierarchy and naturally assume that others share that same respect. For the most part they do, but there's always one malcontent or mouthy kid who needs to learn their place. Usually you'll say something pointed and leave it at that, but the exchange on May 18th when Mercury squares your Ruling Planet Mars will be much more heated. In fact you may even surprise yourself with the intensity. You're apt to feel guilty for a millisecond, but leave it alone. This person had it coming and after locking horns with you, they'll never make that mistake again.