What to do about a snyde, mean ociate?

It's hard to confront people when it's not in your nature and believe me, I know how it feels. I have found by responding when they least expect you to and especially in front of people who feel the same way as you can make that person look and feel so stupid and embared. If you stay calm and don't get angry, that frustrates them even more. Just make sure that you thought well before you decide to do it.