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Sandra Bullock -

Sandra Bullock was asked about filming the naked scene with Ryan Reynolds in 2009's 'The Proposal' while answering fan questions on 'About Last Night Podcast with Adam Ray' in 2021, and the actress laid it bare. "Ryan and I have these flesh-colored things stuck to our privates," she explained of the filming day, adding that her hair was strategically placed over her breasts and "Ryan's little— not little, at all! It's just whatever's there," she nervously rambled, was "stuck, wherever it needs to be stuck." They then proceeded to do the scene that required them to collide and fall to the floor. "When they'd say cut, we couldn't really move. He was on his back with his knees up, and I'm on the floor just sort of resting on his knees, just waiting, and you don't wanna look and we couldn't really move." But that wasn't even the most awkward part!

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Sandra Bullock - Bullock continued, "I hear [director] Anne Fletcher from the darkness go, 'Ryan, we can see your ball sac!'" Oops! "I'm like, 'Oh God!' because you wanna look down but I'm like, 'Don't look down. Don't look down.' Everyone in the darkness spun around to see if they could find a monitor. I was like, 'Anne, there's a way to present that information....'" 

Fortunately, Bullock said she and Reynolds have "known each other since we were prepubescent," and so they took the whole ordeal in stride. "Ryan was just so cool. Unflappable. He is absolutely unflappable," she concluded. 

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Alison Brie - Back when Alison Brie had a part in the series 'Mad Men,' she was always dressed up in restrictive 1960s gowns with tulle skirts and girdles.

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Alison Brie -

Apparently the outdated undergarments were hard to navigate, which resulted in her peeing all over herself on one unfortunate trip to the bathroom! The costume designer assured her it happens surprisingly often. 

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Zac Efron -

While filming the 'Baywatch' revamp, Zac Efron took a tumble during the most important scene. The slo-mo run is one of the most iconic cinematic moments in history.

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Zac Efron -

Efron was left in the sand while his gorgeous, buff co-stars sprinted on. Luckily, the fall actually worked for the new comedy approach to the franchise. 

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Christian Bale - Christian Bale famously lost it when a crew member walked through his sight-line and distracted him during a really intense scene for the film 'Terminator Salvation.'

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Christian Bale -

The actor saw red and unleashed a tirade of abuse at the crew member. The entire tantrum was recorded and got released to the media. He gave a heartfelt public apology afterwards.

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Anne Hathaway -

Anne Hathaway reportedly once came to set for a scene where she had to be totally naked. She stripped off straight away and set to work, only to realize afterwards that it was just a rehearsal and she didn't have to take her clothes off at all. 

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Hugh Jackman -

Hugh Jackman once had an incredibly embarrassing moment live on stage while performing as the lead in the musical 'Beauty and the Beast.'

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Hugh Jackman -

He was lifting his co-star in the air while singing and suddenly stopped. He realized that the muscles he released in order to sing had also released his bladder.

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Benedict Cumberbatch - Simon Pegg is notoriously funny to work with and he decided to play a prank on his co-stars on the set of 'Star Trek Into Darkness.' He told the cast they all needed to wear "neutron cream" to protect them from the "lasers."

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Benedict Cumberbatch - He passed out jars of cream and had everyone waving their fingers around to "release the ions." Benedict Cumberbatch completely believed that it was real and carried on using it long after everyone else got the joke.

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Julia Louis-Dreyfus - Long before her 'Seinfeld' or 'VEEP' fame, Julia Louis-Dreyfus got a part acting alongside Woody Allen. One of Allen's lines in their scene was "Wait, stop. Do you hear that ringing?"

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Julia Louis-Dreyfus -

Louis-Dreyfus got completely confused and kept thinking he was breaking character and wanted to stop the scene. It happened again even after he explained it was part of the script...

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Dave Franco - Dave Franco revealed his most embarrassing moment in an interview with Chelsea Handler. He was scheduled to do his first sex scene in the movie 'Neighbors,' but he had a giant pimple on his butt! He had to discretely ask the makeup artist to cover it for him.

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Keira Knightley -

Keira Knightley's most embarrassing moment on set was totally Ewan McGregor's fault. They were being transported to their filming location by golf cart and McGregor was hanging off the back and joking around with the driver. 

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Keira Knightley -

The driver began swerving to try to throw McGregor off, but instead it was Knightley who fell out of the cart! Not only that, but she went sprawling and completely flashed McGregor. 

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Christopher Mintz-Plasse -

Christopher Mintz-Plasse got his first big break playing McLovin in the movie 'Superbad.' The story called for his first ever bedroom scene with a girl. Parental supervision was required by law as he was only 17 at the time, so his mom had to watch! 

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Jennifer Lawrence -

Jennifer Lawrence and Liam Hemsworth are best friends and constantly prank each other when they work together. Hemsworth once took it a little too far though...

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Jennifer Lawrence -

He put a fake corpse in Lawrence's trailer for her to discover. When she entered the trailer and saw the body she was so badly scared that she peed herself! She says she immediately kicked Hemsworth in the head for revenge and gave him a concussion.

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Lamorne Morris -

Lamorne Morris had a reputation for being extremely delicate while working on the show 'New Girl.' His hands swelled up after filming an episode where he had to play hand bells. 

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Lamorne Morris -

On another occasion, he managed to sprain his knuckle by squeezing a bottle of honey! This earned him the nickname "Porcelain."

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Nina Dobrev -

Nina Dobrev had an embarrassing accident one day while filming 'The Vampire Diaries.' She went to the bathroom in between shoots and accidentally dropped her expensive mic pack in the toilet! 

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Emily Blunt -

The actress revealed that her most embarrassing on-set moment was during the filming of 'The Adjustment Bureau.' 

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Emily Blunt - She was playing the role of a ballet dancer and accidentally face-planted in the middle of a dance scene! 

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Mara Wilson -

Mara Wilson was the child star of the '90s, winning our hearts in 'Matilda' and 'Miracle on 34th Street.' She was only six years old when she acted alongside Robin Williams in 'Mrs. Doubtfire.'

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Mara Wilson -

She recalls having "the talk" with her mom the night before they started filming. She was so excited to be let in on the secret that she boasted to the whole cast and crew that she knew all about the birds and the bees! She even asked one of the hairdressers if she had ever "done it."

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Kristen Schaal -

Kristen Schaal starred in the end-of-the-world comedy 'The Last Man on Earth' alongside comedian Will Forte. In one episode the characters get frisky and then lie in bed eating beans out of a can. 

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Kristen Schaal -

However, the scenes were filmed in reverse. Schaal said she was full of beans while filming the bedroom scene and actually farted on Forte while straddling him! In an interview she said, "If you fart on your scene partner, it's the most intimate you can get." In all fairness, she's probably right. 

Sources: (Huffpost, USAToday, CNN, The Richest, The Mary Sue, The Hollywood Reporter, E!, Worldation, Glamour, MTV, Extra, Closer, Uproxx, Elle) 

See also: Awkward moments that we can all relate to 

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