While promoting his new comedy '22 Jump Street,' Channing Tatum hilariously agreed to arm wrestle Jimmy Fallon on 'The Tonight Show.'

"Obviously, you're a very strong dude," Fallon said during Tatum's segment. "I know that because I've seen 'Magic Mike' 12 times. But I bet I can take you in an arm wrestle."

"Is that so?" Tatum responded.

"I'm serious. I've been working out a lot lately," Fallon challenged. "I'm pretty sure I can beat you."

The two proceeded to engage in the challenge and as soon as they locked their hands together, Fallon and Tatum engaged in a little trash talk, naming off everything they're going to do to the other person if they win the challenge.

We're not going to spoil the jokes or the winner of the arm wrestling match, as you will likely get the giggles after watching Fallon and Tatum mouth off to each other. In fact, you can also see them lose it themselves, as they could not keep a straight face while insulting each other before the match.

Click on the video above to watch the outcome.

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