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1.
Phrases and words such as "lol yeah" and "haha ok" that are guaranteed to kill any text conversation.
"r u coming 2 the prty 2nite?"
"no i cant cuz i hav 2 go 2 a family reunion"
"haha ok"
"way to use a text-killer... now wat do i say?"
by happyfish May 30, 2009
 
2.
The final text, usually a one word reply, used to designate the end of the conversation. Unless you have a desperate texter on the other end.
Dude, rachael doesn't know how to take the textkiller and stop talking!
by Erbodygettintipsy December 05, 2008