Sorry, Tony Romo, ya ain't Terrell Owens' quarterback anymore ... at least not starting QB ... 'cause the ex-Cowboys star says the team would be CRAZY to bench Dak Prescott.
Shocking ... if ya remember the viral video from '08. T.O. -- rockin' shades, cried talking about Romo -- dropping the infamous "that's my quarterback" line after Dallas lost a playoff game.
So, when we saw T.O. in Venice Beach Tuesday ... we asked him to weigh in on the hottest debate in the NFL ... who should start as signal caller for the Boys.
T.O.'s obviously in Romo's corner, right? Nope ... he actually says keeping Romo planted on the bench is a "no-brainer" ... and he doesn't stop there.
Check out the clip!