TKTK 

A placeholder journalists use when they need to find additional info in a headline or story. If you see this on a news website, somebody's made a mistake.

Auto collision on expressway leaves TKTK injured

The cause of death was determined to be TKTK.

TKTK by ttdi June 1, 2015

TKTK 

"Tktk" is an offensive and derogatory response used with the intent of the recipient to not recognize it as an insult. Like flicking off an infant, or cheerfully cussing someone out in a language they don't understand.

Guy:"Dude, that jacket totally makes you look like Justin Bieber."
Dude:"Tktk."
Guy:"...?"

TKTK by Narutofan67 January 14, 2011