revengineer
A TF2 Engineer who uses the Frontier Justice (Gunslinger usually combined) and places his sentries in obvious places that will still get kills. When the sentry eventually gets killed, he uses his crits and goes on a rampage.
Person 1: Dude, that Revengineer is fucking pissed!
Person 2: God, our team's getting wiped
Person 2: God, our team's getting wiped
Revengineering
The act of orchestrating a revenge plot.
Person 1: What are you up to?
Person 2: My ex told everyone I gave him herpes, so I have some revengineering to do. Come over and help with the brainstorming.
Person 2: My ex told everyone I gave him herpes, so I have some revengineering to do. Come over and help with the brainstorming.