To popovich something means to skip, or forget about it. There's no point in doing it, and you'd rather just chill and let shit happen.
Origin: Gregg popovich of the san antonio spurs just gave duncan, ginobli and parker (his 3 best players) the day off, because they would have got too tired to play back to back games.
Using his method, he almost nearly prevailed in beating the denver nuggets, and in doing so, infuriated the coach of the denver nuggets. Although the nuggets won the game, they never got the satisfaction of beating their spurs.
Yo did you go to class this morning?
Nah, I decided to popovich that shit.