The "mother!" star appeared on "Late Night with Seth Meyers" on Thursday night, where she told one hilarious story about how she got into it with a fan on a night off from filming her upcoming spy movie "Red Sparrow" in Budapest.
"I got in a bar fight, I got in a real bar fight," she proudly announced during the interview. "That seems like a dangerous place to get into a bar fight," Meyers responded. "I mean, for him," Lawrence joked.
"We were at a bar, it was beer night and I was drunk, which is rare," she said with a laugh, while sipping red wine. "I was drunk and this guy asked me for a selfie and I was like, 'No. Thank you. No.' He was like, 'Please! My girlfriend will never believe me.' My friend was like, 'If your girlfriend won't believe you then she's not the one.'"
After telling him to "just go away," the guy clapped back at the actress by saying, "Yeah? Fuck you!"
"I don't know. Something in me just snapped but it couldn't have been the alcohol," J-Law sarcastically said. "I was like, 'Did you just say fuck you to me?! Did you just say fuck you to me?!' I grabbed him, I took beers and I started dousing him all over him and he weirdly had a suitcase and I went straight to the bar and I was like, 'Is that your s--t?!' I started pouring beers all over his suitcase."
It ended after the actress' friend grabbed her and said, "Don't waste beer! Don't waste beer!" she revealed. "I instantly relaxed. I was like, 'Of course! What was I thinking?'"
"My friend was in the bathroom. He came back and was like, 'Did you guys see that guy? He was all wet and crying!'" she added.
Lawrence previously explained why she doesn't take photos with fans in public, telling The Daily Telegraph she "just started becoming really rude and drawn into myself."
"I think that people think that we already are friends because I am famous and they feel like they already know me, but I don't know them," she explained. "I have to protect my bubble, like: I have a weird job, don't let this be a reality."