Warner slammed 49 runs in 30 balls to help Australia beat Pakistan in T20 WC SF.
Warner hit 49 to set up Australia's five-wicket victory over Pakistan in Dubai on Thursday to book a title clash with New Zealand.
But his 30-ball knock had two interesting moments including when he jumped out of his crease sideways to smash Mohammad Hafeez for a six over deep mid-wicket after the ball had slipped from the bowler's hand and connected with the bat on a double bounce.
Langer said he was impressed by Warner's instinct to make a shot out of the ball that would have surprised any batsman.
"Oh my gosh! it's one of the best things I have ever seen in the game of cricket. I don't think anyone would have the instincts to do that. Most people would not have been sure what to do. It's a no-ball and then to have the talent and ability to hit it for six, unbelievable. And then he walked of course when he nicked it, so anyone thinks it to be unsportsmanlike, probably evens it up a bit,” Langer told reporters.
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"So much noise out there last night, honestly it was like a rock concert. I think we have all talked about it. He was surprised. Maxi was surprised, he was his partner when saw it on the replays later on in the innings. We will work through that,” Langer said.
The world will see a new T20 World champion when Australia and New Zealand clash in Dubai on Sunday.
(AFP inputs)