It's happened to us all. You're standing (or maybe sitting, crying) in the shower. The steam is relaxing you. As you lather up your hair, it suddenly occurs to you. No, not the meaning of life. But the perfect zinger that would have absolutely destroyed that asshole Chad in the accounting department of your office. Or perhaps, instead of Chad, it's a faceless internet user who has been harassing you cruelly and incessantly in the comments of the articles and listicles you write. It's a shame, r…