June 7, 2014 at 11:15 AM ET
Oh, it was on on Friday night when "22 Jump Street" star Channing Tatum visited "The Tonight Show." Despite the fact that the actor's suit could barely contain his bulging biceps, host Jimmy Fallon stated matter of factly, "I bet I can take you in an arm wrestle."
Unable to hold back a snicker, Tatum replied, "Is that so? OK ..."
"But I gotta warn you though, whenever I arm wrestle, I like to list all of the things I'm gonna do after I win," Fallon said.
"That's weird," Tatum shot back, "because I like to list all the things I'm gonna do when I win."
And so the one-upmanship began. With right hands clasped and their arms tensed for battle, the two men faced off Western-flick style, throwing down giggle-worthy declarations of things they'd do after their momentous victory over the other. The plans were so ridiculous the two couldn't help but snort and snicker as they delivered their lines.
Despite the hilarious war of words, the arm-wrestling match was not forgotten. The two finally put their strength to the test, and — not surprisingly — the muscular Tatum won the challenge. But the actor did admit that he had prepared for the match.
"The Tonight Show" airs weeknights at 11:35 on NBC. "22 Jump Street" opens June 13.