Have any of you ever done this?

Once a year, usually in October, we do this thing at my school where if we choose, we come in in the morning & someone ties a red ribbon around our wrist. It's a sign that we've given up our voice for the day in defense of all the unborn babies who can't speak for themselves. I know also that some people do this a little differently by putting red tape on their mouths. Have any of you ever tried it?