Warren Buffett brought his Midas touch to a locker room full of women in lingerie ... and football pads -- to deliver a rousing pregame speech.

Buffet paid a visit to the Omaha Heart players of the Legends Football League before their last game against the Chicago Bliss, and did his best to fire up the home team. Even football players know -- when a man worth about $70 BILLION speaks, you shut the hell up and listen!  

But more importantly, you gotta see the Oracle of Omaha throwing his arm around the players for pics. He smartly told the photog ... "Take your time. There's no hurry." 

The Heart lost to go 0-6 on the season. They can't all be blue chippers, Warren.