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‘Big Bang Theory’ Stars Kaley Cuoco and Johnny Galecki Share a Titanic Goof in Behind-the-Scenes Look

Stars of CBS sitcom rock the boat with spoof of iconic film scene

Way to rock the boat, Kaley Cuoco and Johnny Galecki.

“Big Bang Theory” stars Cuoco and Galecki got goofy in a “Titanic” kind of way while shooting this week’s episode of the CBS sitcom, if a behind-the-scenes look shared by Cuoco on her Instagram account is any indication.

In the post, published to Cuoco’s Instagram account Thursday morning, the actress revealed a nautical theme to this week’s episode.

“We’re on a [boat icon]!” Cuoco wrote. “TONIGHT an all new @thebig_bangtheory.”

The accompanying photo found Cuoco standing behind her onscreen spouse Galecki and gripping his outstretched arms as he stood with a look of wonder on his face, in an apparent homage to the iconic “I’m flying” scene from the 1997 film “Titanic.”

According to CBS, on this week’s episode of “The Big Bang Theory,” Penny’s ex-boyfriend, Zack, and his wife want a baby, but when Zack is infertile, they ask Leonard (played by Galecki) for help.

See Cuoco’s behind-the-scenes glimpse below.