Karma, as defined by the Satanic Goatslayer English Dictionary, means
The forced presence of homicidal thoughts in your brain, causing your head to swell and eventually rupture.
One time, when I was closing a set of snatches, karma snuck up on me and made me throw my lifting chalk (salt) into Toothless' eyes, causing him to flail around aimlessly. The nice friend that I am, I had the common sense to shoot him in the chest with a bean bag.
Karma truly is a bitch.