warmonger a term that originated in a Vietnam era Black Sabbath song used to describe corrupt politicians who start senseless wars primarily to boost the profits of the military industrial complex
A gamer who believes they are vastly better than they actually are. Often seen in games such as TF2, Overwatch and COD.
"Aw fuck, we've got a Warpig (Gaming definition) on our team. This match is gonna be fucking annoying cause he's just gonna charge in there then blame us when he dies."
in terms of TF2, a Warpig is a player who would overestimate their level of skill and ends up getting themselves killed faster than they know what happened. This term could work with any game.
"jimmy, there goes another warpig into the enemy intel. *death sound after sentry gun fires* See jimmy? What did I tell you."