How does teamkill work? Why punish me?

Grimbru: I hold my hands up guys. I sometimes check my second monitor while the timer is running down, and upon clicking back to WoT my gun might occasionally fire. Sometimes RNGesus puts a tank in the way of the shell.   Not great when you have the [WG] tag and logo on your tank.   "Hi WG" "Hey Grim" BOOOOM "WTF WG NUB REPORT!!!" "erm... Sorry :("   If you have been a victim of Grimbru related friendly fire, please contact the non existent support line I have specifically not set up for these rare cases.