Late-night legends: Martin Short and Steve Martin return

If you had any doubt about who the funniest men in comedy are, look no further than Steve Martin and Martin Short's latest appearance on 'The Tonight Show Starring Jimmy Fallon.' The notoriously side-splitting duo hijacked the interview, and surprised the host with their favorite moments from the show, which Short called "the greatest show on television because there is no host in late night that pretends to care the way you do."

Check out this gallery for more about the gut-busting legends, their boisterous endeavors, and sketches from the past.

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They age like fine wine -

The 68-year-old and and 73-year-old proved they won't be slowing down any time soon. "I wanted to do the show one more time, before my beauty fades," Martin said.

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Banter! - Short told Fallon, "You proved that tall, handsome, white men can make it in show business," and Martin added, "When I’m home watching the show, I think, wow, for somebody who does meth, your teeth look great!"

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They never miss an opportunity - The pair joined Fallon to celebrate his fifth late-night anniversary and surprised him by showing a “greatest moments” montage, which turned out to be a montage of their own late-night appearances, ending with a clip from Jimmy Kimmel's show. Click through to learn more about the hilarious legends.

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Partners in crime - The duo's performances together are a guaranteed source of ridiculousness, sheer wit, and many, many tears of laughter.

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Partners in comedy - They met on the set of the 1986 comedy '¡Three Amigos!' During a 2016 appearance on 'The Tonight Show Starring Jimmy Fallon,' Short said he was struck by how pale Martin was in person—whiter than a truck rally, to be exact.

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It's all love - Short said the funniest improvised line he'd ever heard was from Martin, when Martin asked him what the worst job he ever had was, and Short said, "I did a bad pilot in 1980," to which Martin replied, "I didn't say the worst sex, I said the worst job."

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Short and Martin's 'Very Stupid Conversation' - In their 2014 comedy show, Short can be seen in a flesh-colored body suit, dressed as a pig-tailed cowgirl, and dropping one-liners like, "Have you heard about the blind prostitute? You have to hand it to her."

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'An Evening You Will Forget For the Rest of Your Life' - Short and Martin have an Emmy-nominated comedy special called 'An Evening You Will Forget For the Rest of Your Life.' It captures something special between them, similar to how Short describes the duo's relationship as "closer than Trump and Putin."

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'An Evening You Will Forget for The Rest of Your Life' - The special combines musical sketches and conversation about their careers, the people they've met, and their iconic presence in show-business and stand-up comedy.

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Sharp, self-effacing humor - "It's we who have sold out. If we had saved up, we wouldn't be here."

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Short has been called "The greatest talk-show guest of all time" - The New Yorker published a piece on Short's boyish, energetic performances as a guest on talk-shows, cracking up all the greats like David Letterman, Conan O'Brien, Johnny Carson, Jay Leno, Jimmy Fallon, and more.

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He does the work and reaps the giggles - Short told Vulture that in preparation for a talk-show appearance, he sends in nearly 20 pages of stories and material ahead of time, then spends over an hour whittling it down with the segment producer. Then he has to make it seem natural!

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David Letterman loves him - Letterman called Short one of the funniest men on Earth, and has hosted him on his show over 50 times over the span of more than 30 years.

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Short's most embarrassing on-set moment - When Short was on the 'Late Show with David Letterman' in 2015, he confessed that while shooting his film 'Clifford,' he had forgotten to remove the hair on his legs (he was 40 and playing a 10-year-old) and after stripping to his boxers and having the makeup ladies work on his legs for close to half an hour, he realized his penis had been hanging out the whole time.

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He nearly tripped up Conan O'Brien - After his segment on 'Conan,' a young actress came out onto the couch and sat between Conan and Short. As the host started talking to his new guest about her move from modelling to acting, Short made a mock interested face and Conan nearly choked on a laugh. Short told Vulture that during the commercial break, Conan said to Short, "I'm trying to make a living, asshole."

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His last appearance on 'Letterman' was legendary - Short, unsurprisingly, chose to sing a song: "It's the end, my pretend show-biz friend, farewell! We'll meet again, someday, in hell."

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Canada's comedy giant - It's difficult to name a single thing Martin Short has done because he's never been known for just one thing. He's been in films, on 'Saturday Night Live,' 'Second City TV,' Broadway, countless talk shows, and he's written books, shows, and films too!

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He's here for the hang - In an interview with Vulture magazine, Short discussed his long career and said, "You learn quickly that since you can't always control the end result of the work, the thing that matters most is having a good hang."

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Before the big bang - Before his career exploded and expanded into its current breadth of comedic constellations, Short was just a kid from Hamilton, Canada. He received a bachelor's degree in social work from McMaster University.

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Old pals with 'Schitt's Creek' star - Short and Eugene Levy were both cast in a Toronto production of 'Godspell' in 1971, and they remain good friends to this day. Levy also attended McMaster!

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'Saturday Night Live' - After earning his start on the improv-group-turned-television-show 'Second City TV,' Short went on to save 'Saturday Night Live' after the departure of Eddie Murphy hit the show hard.

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Canada's shining star - Short has not one, but two stars on Canada's Walk of Fame. He's also a member of the Order of Canada, the Canadian Screen Awards Lifetime Achievement Award, and he has a Canada Post stamp in his image!

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He doesn't want you read into him - His brother died when Short was just 12 years old, then his mother and father died within the next eight years, but the comedian denies any connection between his comedy and these experiences. He claims to have started drawing up skits before any of that had happened.

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Ellen Degeneres and Short are mutual fans - When Short was a guest on 'The Ellen Show' in 2010, he told her that it was the greatest thrill of his whole career, second only to when he lost his virginity in the late Bea Arthur's dressing room at the Winter Garden Theatre. He then added, "It's more than a thrill—it's an obligation."

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On his age - After he turned 60, Short told Degeneres that the only time he doesn't have to pee is when he's peeing. And, in regards to his health, he said, "I'm doing Atkins... not the diet, his widow. I'm doing his widow."

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His most awkward moment - In a promotional interview for 'Madagascar 3: Europe's Most Wanted,' television host Kathie Lee Gifford asked Short about his wife of 36 years. The actor gushed that they were still deeply in love, but Gifford hadn't realized that her guest's wife had passed away two years earlier from ovarian cancer.

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He's a team player - The comedian was good-humored about the blunder and played it cool for the entire interview.

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Short with a tall heart - Short told Gifford off-air, and she quickly apologized on-air. In a later interview during a junket for the same film, Short had only nice things to say about Gifford and explained that she just didn't have the information.

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Quintessentially Canadian comedian - Usually comedians aren't branded as "nice" because their job requires them to step on toes and pick on people for fun, but Short's fans, fellow comedians, and everyone he's interacted with only have nice things to say about him.

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Broadway star - Short had a long stint onstage, singing and acting in several productions. He even won a Tony Award for his performance in 'Little Me,' and he was nominated for a prize for 'The Goodbye Girl.'

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His famous characters - Over the course of his career, Short developed several quirky, neurotic characters like Jiminy Glick, Irving Cohen, and Ed Grimley, and in his satirical one-man show (which had a cast of six) called, 'Martin Short: Fame Becomes Me,' he revived them all.

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Hitting the stage with George Costanza - Short paired up with Jason Alexander, the actor who gave the world George Costanza in 'Seinfeld,' in 'The Producers.'

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'Maya & Marty' - In 2016, Short and Maya Rudolph debuted their new variety show on NBC, produced by none other than Lorne Michaels. Although it only lasted one season, it had appearances from stars including Larry David, Miley Cyrus, Nick Jonas, Ben Stiller, Kate McKinnon, Emma Stone, Jerry Seinfeld, Ricky Gervais, Kevin Hart, Tina Fey, Amy Poehler, and many more.

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They've got engines that never run out of gas - Both Martin and Short have had incredible careers and have brought millions of people to tears by cracking the jokes no one else will. Keep an eye out for their upcoming tour, "Now You See Them, Soon You Won't."

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Late-night legends: Martin Short and Steve Martin return -