Every word that falls from your lips now will sound like a direct order to a well-organized army: and the effect will be pretty similar, too. It's not that you're going to be barking out orders like a drill sergeant: your tactics would never, ever be that crass. One or two well-placed syllables, however, will have the same effect. And if whoever you're speaking with knows you well, it probably won't take more than just one glance in the right direction.