This Jen is laying down the law! Jennifer Lawrence stormed out of an interview with YouTube stars Smosh as part of an epic prank involving her Hunger Games costars Liam Hemsworth and Josh Hutcherson.

The Oscar-winning actress, 25, appeared on Smosh to be interviewed by the show's hosts Anthony Padilla and Ian Hecox, who are already known for pulling pranks on guests. However, Lawrence went into the sit-down with several tricks up her sleeve, including a collaborative "pranks for good" effort with Defy Media and a superfan, Dylan Miceli-Nelson, who suffers from muscular dystrophy.

As seen in the footage from the interview, Hecox sits with Lawrence and tries to make her uncomfortable; instead, she reverses the prank on him.

"I hope you don't mind, my feet get really hot when I get nervous," Hecox tells her.

"Yeah, just get comfortable," Lawrence coldly replies. "I'm not gonna take my shoes off."

Later, she asks the interviewer if he's high as she gets increasingly agitated about his questions and his behavior. Finally, she's had enough when he takes off his shoes again.

"I was being serious about the lack of respect. This is like, a waste of everybody's time," Lawrence snipes. "I’m sorry, I feel like you’re not really a professional." She then walks off the set of the YouTube series.

Hecox is totally shocked by Lawrence storming off the set, and is told by Hemsworth and Hutcherson that their jokes weren't funny.

Watch how Lawrence exposes her prank in the video above! Plus see Us Weekly's roundup of the best celebrity pranks above.

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