Justin Timberlake and Jimmy Fallon Sweet Bromance

Justin Timberlake reveals pal Jimmy Fallon interrupted his wedding speech, 'sparking a 10 minute improv' between the two 

He is good friends with Justin Timberlake, 32, and the pair have regularly performed hilarious raps on his eponymous talk show.

So it seems fitting that Jimmy Fallon would bring his particular brand of comedy to Justin's recent wedding.

The 38-year-old interrupted Justin's speech to his new wife Jessica Biel at their Italian wedding in October, turning it into a comedy improv session, writes Justin in the latest issue of Time Magazine.

Best buds: Jimmy Fallon (centre) interrupted JustinTimberlake's  wedding speech to his new wife Jessica Biel, pictured in 2011, during their Italian wedding in October, writes Justin in the new issue of Tim magazine  

'Picture this: I'm in the heart of an impromptu speech at my wedding reception in front of 150 guests, pouring it out to my lovely new bride,' writes Justin in the magazine, in which Jimmy is named on this year's Time 100 List of the most influential people in the world.

'You could hear a pin drop. I paused for just a moment in between thoughts. 

'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 10 minutes and had all our guests roaring with laughter.'

Cheeky: Jimmy, pictured in 2011, apparently shouted out a joked while Justin was talking, which led to a 10 minute comedy improv session between the two men 

Justin admitted he was taken aback by Jimmy's cheeky behaviour during such a heartfelt moment.

'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?'

But there were no hard feelings on Justin's part, who praised his good friend's comedic talent. 

'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 a--.'

All good in the end: Justin wrote that 'anyone else would have bombed on that stage and then I would have kicked their a--' for ruining his speech to Jessica, pictured in February 

Justin also called Jimmy a 'brilliant comedian' and 'spot-on impersonator' in the Time writeup. 

The pair have appeared numerous times together in comedy sketches on both Late Night With Jimmy Fallon as well as Saturday Night Live.

In March, Justin spent an entire week on Jimmy's talk show, chatting with the host, singing, and performing skits in the lead up to the March 19 release of his latest album The 20/20 Experience.

Regular comedic duo: Justin spent an entire week on Live With Jimmy Fallon, performing skits, singing and chatting with the host