Did you know ... The Rock's signature move -- THE PEOPLE'S ELBOW -- was created as a joke to make Undertaker laugh?
It's true ... according to Triple H who's giving us the hilarious origin story for one of the most iconic finishing moves in pro wrestling history.
Triple H says guys like The Rock, "Stone Cold" Steve Austin, Mick Foley and more would try like hell to get 'Taker to break character during live matches.