The declaration that you will deliberately not watch something on television. As if you had a DVR that would avoid recording shows of dubious merit or that just plain stink.
"Dude, 'Dancing With the Stars Vs. Food' is on tonight."
"Yeah, I think I'll negativo that."
Person 2 *pitches idea*
Person 1: that's a horrible idea
Person 2: WHY ARE YOU SO NEGATEIVE? All you do is negate negate negate. *Curses in mother tongue*