'Barbenheimer' memes are everywhere as people anticipate the cinematic showdown between 'Barbie' and 'Oppenheimer'

• "Barbie" and "Oppenheimer" are set to be released in cinemas on July 21.
• TikTokers and Twitter users have been preparing for the release by creating memes and videos. 
• "Barbie" actress Margot Robbie said that her friends have been sending her "Barbenheimer" memes.

With "Barbie" and "Oppenheimer" both slated for a July 21 opening day, the internet is celebrating by creating "Barbenheimer" memes inspired by the two very different movies going head-to-head.

If you've been out of the loop, the fact that Christopher Nolan's "Oppenheimer" (a serious film about the atomic-bomb creator, J. Robert Oppenheimer) and Greta Gerwig's movie "Barbie" (about the Mattel doll) are both being released on the same day has delighted fans. People are creating schedules for back-to-back viewings. There are plans for what to eat and drink. There are even plans on what to wear.

And then there are the memes.

In an interview with BBC Radio 1 on July 18, Margot Robbie, who stars as Barbie in the titular movie, and Ryan Gosling, who plays Ken, shared their thoughts on the "Barbenheimer" memes.

When asked if she had seen the memes, Robbie said that her friends have been sending her a lot of them. "People are so clever, people who come up with those funny memes," she said.

At the end of the interview, Gosling managed to create a new meme all by himself when he asked, "What is a meme?"

Twitter users were quick to pick up on Gosling's reference to "Oppenheimer" actor Cillian Murphy, who once asked the same question in an interview with NME.

"He knew exactly what he was doing there," tweeted one user. 

"Ali showing once again why he's the best at this. Congrats on the birth of a new meme," tweeted another. 

Meanwhile, Twitter users were creating memes of their own.

"I feel like this is the Grimace Shake, but for #Barbenheimer. I obviously loved it," one user tweeted, referring to the recent viral McDonald's Grimace Shake trend.

"I love that fans are taking the oppenheimer press into their own hands," read another tweet referencing ths smoking pink Barbie house.

TikTok users are also creating videos to celebrate the release. The #Barbenheimer hashtag currently has 109 million views.

One user, who goes by the username @alysilverio, shared a video of a Barbie-themed party she'd thrown. The caption read, "pov: you throw a barbie themed party and the boys show up like this." 

In the video, the men walk through the door wearing flat caps and waistcoats, presumably representing characters from "Oppenheimer." They are greeted by a group of women dressed entirely in pink. 

One of the women is holding a Barbie-themed cake, which the TikTok creator made in a previous TikTok video.

"You mean peaky blinders?" the top comment read. 

Another comment read, "Wow, that's so Ken of them actually."

In another video that has 3.5 million views, Tess Donatello, who goes by the TikTok username @tessdonatello, showed herself taking off her black "Oppenheimer"-themed outfit, to reveal her pink Barbie-themed outfit underneath. 

"BYE THIS ATE," read the top comment, which has 59,700 likes.

Warner Bros. predicts that "Barbie" will take up to $80 million in its first three days — about double the $40 million that Universal Pictures expects "Oppenheimer" to take in the same period. 

Sources told Insider's Jason Guerrasio that "Oppenheimer" writer and director Christopher Nolan wasn't thrilled the studio wanted to release "Barbie" the same weekend as "Oppenheimer."

In a recent interview with Guerrasio about whether "Barbenheimer" is "strictly pettiness" by Warner Bros, Nolan said, "Now, you must know I'm not going to answer that question, only to say those who care about the theatrical experience, we've been longing for a crowded marketplace with a lot of different movies. That's what theaters have now, and those of us who care about movies are thrilled about that."

There's still time for even more memes and videos to surface before both movies are released on July 21. The fun has just begun.