We all know Father Time is undefeated, but Joe Montana clearly doesn't believe that applies to Tom Brady … 'cause he thinks the G.O.A.T. can play football until he's 60!
Montana -- who was Brady's childhood idol -- recently spoke with USA Today, where he said he wouldn't be shocked if the seven-time Super Bowl champ played well beyond even 50 years old.
The reason?? Joe Cool says it's simple -- 44-year-old Tom rarely ever gets touched by defenses.
"He's hardly ever getting hit," Montana said.