no.

Do not swear. All you need say is "Yes" if you mean yes, "No" if you mean no. Anything more than this comes from the evil one.' (Matthew 5:37) The Sermon on the Mount speaks with a simplicity that has been lost in the complications of church life and theology. Saint Benedict is equally simple in his Rule for monks. Here is a piece that echoes Jesus' words, and can serve as an examination of conscience for anyone: "I do not act in anger or nurse a grudge. I rid my heart of all deceit. I never give a hollow greeting of peace and I never turn away when somebody needs my love. I speak the truth with heart and tongue."

http://www.sacredspace.ie/dailyprayer/index.php?lang=en&d=01&m=02&y=2010#conversation