While appearing on "The Tonight Show" Tuesday night, the actor told an insane anecdote involving a ram, tossing a baby, and the Grand Canyon.
McConaughey claimed to have saved his infant son in 2004 by throwing him 15-feet to safety. But it was up to Fallon and musician Tarik Trotter to determine whether or not his story was true.
Fallon, McConaughey, and Trotter all participated in the late night show's iconic segment "True Confessions," where Fallon and his guests read an envelope that's contents may or may not contain true stories. The player must attempt to convince their opponents that what they're saying really happened. It's then the challenge of the roundtable to figure out if the competitor is being honest or is just full of B.S.
McConaughey was up first. "I, McConaughey, got charged by a mountain ram at the edge of the Grand Canyon and had to throw my 6-month-old child 15 feet through the air -- to my wife -- to save him," he said.
Fallon and Trotter were immediately shocked by the story and began to grill the "True Detective" star for more information. They believed to have caught McConaughey in a lie when the actor had added a detail to his original story. At first McConaughey had said that he tossed just his son Levi, however, he then added that he threw his dog as well.
McConaughey didn't waiver and clarified his story. "After I had already got rid of the dog, I had to launch Levi through the air for my wife to catch so we didn't get rammed off the edge," he said.
"It has to be true," Fallon said. "I think it's a lie," Trotter replied.
"That's 100 percent true," McConaughey said, before telling the full story.
"I squared off just tried to go as Yoda as I could with this ram and just say, 'Not me,'" he said.
Watch the clip above to see if Fallon and Trotter managed to stump the table with their stories. The late-night host claimed to have driven a ferry at the Statue of Liberty, while Trotter said that he once drove with Kanye West in the trunk of his car.