Top 20 Times The Big Bang Theory Cast Couldn't Keep A Straight Face

Amy and Sheldon have a formula for figuring out their wedding so that both of their ideas are fairly incorporated. It starts well, but to no surprise, it turns into a disagreement fest. Amy frustratedly mentions potentially changing the flower girl to something less conventional. Shooting the scene, Jim Parsons couldn’t help but crack a smile after Mayim Bialik delivered the second part about the lack of flowers and presence of something less pleasant. The line is super funny within the context of the wedding planning scene. So we can see why Parsons couldn't resist smiling.

By the time Penny tells Leonard that her brother is coming to town during Season 10, he already knows about his illegal drug activities. Naturally, he’s not happy about her brother staying with them. Penny tries to help get her brother a job in the area. When she brings up the idea of him potentially working at the same pharmaceutical company as her, Leonard has a funny and creative response. Kaley Cuoco visibly tried not to laugh after Johnny Galecki delivered the line. But her smile eventually turned into laughter after all.

Sheldon provides abundant opportunities to get roasted throughout “The Big Bang Theory.” In many cases, it’s for his quirkiness or unconventional behavior. During one particular stairway scene in Season 10, he says something that exhibits kindness and social awareness, the latter of which especially often escapes him. Perhaps this comment doesn’t warrant a snarky response, but that’s what Leonard gives. After Leonard takes the shot at Sheldon, you can see Kaley Cuoco smiling and even starting to chuckle while walking up the stairs. When it was time to say her line, it quickly became evident they’d need a retake.

If you’re on Bernadette’s team for a scavenger hunt, you better be locked in. All she wants to do is win. She shows that competitive edge during a Season 7 episode in which she finds herself teamed up with Leonard for a scavenger hunt. Things get a little rocky for Penny and Leonard when the teams are decided. Later, Leonard tries to bury the hatchet with Penny during the game. But Bernadette isn’t having it. Not the time, and not the place. This scene, which takes place at the comic book store, took several efforts to get right. Melissa Rauch and Johnny Galecki found the situation humorous as Rauch repeatedly shouted her line and shoved her co-star.

When Sheldon and Leonard find themselves at a crossroads with their work in physics, Leonard voices his disappointment and frustration to Penny. So, Penny suggests Raj and Howard cheer up Leonard and Sheldon. Raj is not in the mood for their negativity and what he describes as whiny, baby-like behavior. An outtake from this Season 11 scene showed Kaley Cuoco and Jim Parsons laughing. While Raj actually executed the line well, it certainly provided a reason for the actors to laugh. Howard’s presence during the scene is also worth nothing because at this point he’s an expectant father, visibly overwhelmed by impending fatherhood. Raj’s words certainly don’t help put him at ease.

Sheldon’s idea of ‘consoling’ someone isn’t quite up to par. In a Season 12 episode, Amy could use some emotional support from her husband. During a conversation with Penny and Leonard, Sheldon claims to have given it to her. But that doesn’t sound like ‘consoling.’ Penny’s ensuing line is seemingly sarcastic, poking fun at the lack of effort Sheldon gave to brighten up his wife’s day. Jim Parsons giggled after Kaley Cuoco said this line. Cuoco joined in on the laughing as well. This dialogue was a great piece of scriptwriting, and Cuoco’s execution brought it to life with flying colors.

When a couple is watching a series together, there may come a time when one person feels tempted to watch an episode without their significant other. Sepending on the situation, that could cause an issue. Penny watches not just one, but two episodes without Leonard. He isn’t thrilled about it, describing his fight with Penny to their friends. This produced a funny blooper in which the live audience reacted to Leonard’s line. This caused Cuoco, Parsons, and Bialik to smile and eventually break. Shooting of another scene in Season 10, an “ew” sound from the live audience made Penny laugh. But we’re choosing the instance where more than just Cuoco laughed.

Stuart and Raj fight over Bernadette’s coworker, Ruchi, during Season 11. Raj goes behind Stuart’s back and isn’t totally truthful when Stuart runs into him and Ruchi. At one particular moment during the episode, Stuart’s line about the ‘big leagues’ of desperation produced a hilarious blooper. Kevin Sussman, who plays Stuart, delivered these words with great intensity and an irritated tone. The humor of the line itself along with Sussman’s execution of it caused Kunal Nayyar to crack up. What actually made the final cut for the episode was a calmer delivery of the line, which is also funny, but arguably not as funny as the blooper.

Bernadette gives birth to Halley in Season 10. That same season, Howard brings his and Berndatte’s baby up to Leonard and Penny’s apartment. A laughter-filled blooper came out of this scene. The baby is asleep, so Howard asks if he can put her in the bedroom. Penny gives the okay. The blooper came after this as Simon Helberg tried to maneuver between a couple of chairs with the baby car seat in his hand. It didn’t go as smoothly as he hoped. The rest of the actors in the room laughed. The fact that the mishap occurred right after Amy offered help made it all the funnier.

There’s snoring, and then there’s whatever that noise Sheldon makes while sleeping. Even Jim Parsons recognized just how silly he sounded while shooting this bed scene with Mayim Bialik. After a few funny-sounding snores and body movements, Parsons couldn’t control himself from laughing. This happened more than just once. He apologized and showed his frustration for not being able to keep himself together. At the same time, you could tell he was having a good time despite his several failed attempts. Unsurprisingly, what ultimately made the final cut for this scene was also quite funny.

In Season Nine, Stuart invites the girls over to the comic book store to get their advice on how to bring more women through the door. When asked what he’s done so far, he mentions the “breastfeeding area” and tries to allay their concerns by telling them about the camera he had installed above them. In the episode that aired, this last comment creeps the girls out. However, in a great blooper, actor Kevin Sussman (who plays Stuart) can’t quite make it through his speech which ends up cracking up the rest of the cast in the scene as well.

Okay, so we have to admit that Sheldon handing Wil Wheaton a Wesley Crusher action figure and telling him to “feel free to play with yourself” - now that’s a great line. It still makes us laugh every time we watch that episode. And it turns out, Mayim Bialik liked it also. So much so in fact that the actress just couldn’t stay in character when it was her time to speak next. She was supposed to be angry - which we see in the aired episode - but in the blooper, she couldn’t even get started.

Depending on your POV feet can be sexy or gross, but not many people find them funny. However, watching Kaley Cuoco go to town on her feet in this season four scene was too much for Simon Helberg to handle. As we saw in the scene that made it to air, Howard is supposed to admonish Penny for scrubbing her feet wrong and then take over and show her how it's done. But in this take that ended up on the blooper reel, Helberg - although he tries hard to hang in there - can’t help but break as Penny scrubs and scrubs and scrubs away.

In Season Six, Raj had the very funny idea of dressing up as Indiana Jones’ mocha-skinned love child ‘Indian Jones’ for Halloween. The problem is that Jim Parsons and Simon Helberg thought it was a really funny idea also. This was a problem because every time Kunal Nayyar would try and get his lines out, those other two would keep cracking up. And if that wasn’t bad enough, once Parsons and Helberg were able to hold it together and keep a straight face, Nayyar just couldn’t get the line out properly for take after take after take after…..

One of the things that makes this scene so funny is how long Helberg and Nayyar hold their positions with their faces just a couple of inches from each other. If you’re wondering how they managed to do it without laughing, well the answer is… they didn’t. At least not on the first take. We’re not sure how many takes they did, but we do know that at least one of them led to this great blooper in which they hold, hold, and hold, but eventually Nayyar cracks a smile. Helberg manages to hang on a bit longer, but not by much.

In the Season Nine episode “The Fermentation Bifurcation,” the gang runs into Penny’s ex Zack at a wine tasting and gets to talking about science. Because, as Zack points out, he loves science and can even name a number of famous scientists including Mike deGrasse Tyson. Zack’s name mixup gets a smile of superiority from the geniuses - as the script certainly called for. What it didn’t call for though, was Kaley Cuoco bursting out laughing - which she did during one of the takes when Zack stumbles over the name mixup.

Raj might just be the character most in touch with his feelings and the best one to give advice to the couples in the group. But that doesn’t mean they always want his advice. And in “The Discovery Dissipation” each couple, one after the other, tells him exactly that. First, it's Howard and Bernadette, followed by Sheldon and Amy. But before they got a good take of Amy telling Raj to leave, there were a couple in which neither Nayyar, Bialik nor Parsons could keep a straight face as Raj doled out his relationship advice.

Howard is a master of impressions and in Season Six’s “The Love Spell Potential,” we got to enjoy a number of them - from Nicolas Cage to Christopher Walken. But when the girls return to the apartment where the guys are playing Dungeons and Dragons, Howard breaks out his Al Pacino impression to invite them to join in on the game. And yes, the characters are supposed to appreciate the impression, but if you look at the cast around Howard, you can see that these are real laughs - not acting laughing.

The episode in which Sheldon takes care of a sick Amy is filled with some of the biggest laughs of the series. We all remember Sheldon putting VapoRub on Amy’s chest and spanking her to “punish” her for lying about being sick once her condition had improved. Well, as big as the laughs from the studio audience were during these scenes, so too were Parsons and Bialik’s character breaks in the bloopers for each one. Bialik actually goes and winks at Parsons while he rubs her chest and Parsons loses it after each spank of her rear end.

It often requires multiple takes to get a scene right, and actors can break character numerous times before finally keeping a straight face for the scene that makes it into the episode. And then there are times when the scene that makes it to air isn’t the one where they don’t break, but rather the one in which they break the least. Case in point, Howard and Raj’s concert at the comic book store in Season Nine. As you can see in this blooper, Kaley Cuoco is breaking through pretty much the entire song. But check out the actual scene and you’ll see Cuoco holding strong when they first cut to her, but once Nayyar and Helberg hit those high notes, she breaks yet again.

Let us know in the comments which character from “The Big Bang Theory” makes you laugh the most!