Lagknife
When you are cheated out of something by circumstances outside of your control, such as when you are stabbed in Call of Duty, or sniped in Halo, merely because the internet you are connected to lagged and left you exposed and unable to defend yourself.
"Oh sh*t my internet is giving out!"
"Yeah and you got lagknifed from behind too..."
"I would have gotten him too if my internet hadn't died!"
"Yeah and you got lagknifed from behind too..."
"I would have gotten him too if my internet hadn't died!"