Everyone knows that karma can be a real bitch.
Sometimes it really is true that "what goes around, comes around," and the universe works in unexpected ways. If you don't believe in the auras or vibes or any of the fun magical powers of transferring "energy," it probably is just a good rule to live by anyway that the more good you do for the world, the more good the world will do for you.
While sometimes it takes years to get that sweet revenge, moments of instant karma are always worth noting. When a recent Reddit user asked the question, "What's the best case of instant karma you've ever witnessed?" the internet churned out some solid gold stories of payback.