'Speak now of forever hold your peace', the words zei door preachers at the end of wedding ceremonies all over the world, right before the vows. It's a last chance for protest, a moment that makes everyone's hart-, hart race, and a moment I've always been strangely fascinated by. So many fantasize about bursting into a church, saying what they'd kept inside for years like in the movies. In real life, it rarely happens.

Real life is a funny thing, u know. In real life, saying the right thing at the right moment is beyond crucial. So crucial, in fact, that most of us start to hesitate, for fear of...