Jimmy Fallon picked a weird time to deliver one of his best monologues.

In an essay about Jimmy for Time's 100 Most Influential People issue, Justin Timberlake revealed that the late night host interrupted his wedding to Jessica Biel last October, heckling Justin during an improptu speech at the reception.

"You could hear a pin drop. I paused for just a moment in between thoughts," wrote Justin. "And then there was Jimmy, shouting a joke from his seat, sparking an improv between the two of us that went on for a good five or ten minutes and had all our guests roaring with laughter."

Most people would have been less than pleased with Jimmy's choice of venue to try out new comedy material, but Justin took it in stride and said he found the experience to be funny. He wrote that few people would have the humor to pull off such a gutsy move.

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"Interrupting the groom's speech at the wedding reception? Cracking jokes when your buddy is looking desperately for the words to say that he hopes his wife will remember forever? It turned into a moment that everyone there will remember forever," he said. "Anyone else would have bombed on that stage. And then I would have kicked their ass."

"He's a brilliant comedian. A talented musician. A spot-on impersonator," said Justin. "Jimmy has redefined and recharged late-night television with a genuine excitement and energy that gets under your skin."

Jimmy has established himself as arguably the most popular late night host on television. His show Late Night with Jimmy Fallon has been on the air since March 2009 and has racked up 818 episodes as of today. In a full-on shuffle in the late night department for NBC, he is slated to take over Jay Leno's role as host of The Tonight Show in 2014.

It remains unclear who will replace Jimmy in his current time slot, but radio host Howard Stern has reportedly been considered for the gig. Carson Daly may also be getting the boot from his long-running show in the 1:30am time slot, Last Call with Carson Daly, with Alec Baldwin reportedly in talks to take over that show.

Justin was also featured in the magazine as one of the 100 most influential people, but his essay was composed by musician Stevie Wonder.

What do you think of Jimmy's wedding heckling?

Photos courtesy of NBC