Ofter a person in an online internet game who kills their own team mates for the "lolz". In other terms they may do so because they find their team mate inadequate at gaming, in which case they will team kill nubbies.
"Why are you killing your whole team?"
"Just for the lolz."
"WOW you're such a TEAM KILLER"
"I Team Kill Nubs"
"Dude we're only on easy."
"Bounce back to nub land.:
"Don'te be such a TEAM KILLER come on!"
<Noun> Computer gaming slang.
A person who, during an internet computer game, kills or damages their team mates intentionally in order to either help the other team (to which they may also be referred to as 'spies') or just to be a cock sucker and/or n00b.
May be abbreviated to TK'er.
A person who, through accidental methods or with intent to do so, kills most or all of their team, may happen repeatedly. Abbreviated as a "TK'er"
N00b: *Grenades his whole team*
players 1-4: DUDE, STOP TK'ING!
A person who kills his/her team mates.
*Player 2 shoots Player 1*
Announcer: TEAM KILLER!
Player 1: omg noob TK'er gtfo!!!
1) One who kills members of their team in online multiplayer matches, causing much frustration to their victims. 2) The assholes of the gaming universe. 3) An individual playing online videogames, who joins the opposing team and intentionally gets themselves killed in order to help their friends on the other team win.
Billbot70: What? Why did he just frag me!?!
FreyedChicken67: You didn't know? He prides himself in being a Team Killer...