People spending the night at Pieces , which is in Greenwich Village, were shocked to spot the stars, who can be seen mingling with the crowd and laughing in a number of videos tweeted by onlookers.
In one clip, 28-year-old Lawrence is heard saying that being a bride-to-be has "nothing to do with her drinking abilities" after Adele appears to shout: "You're f---ing engaged, you're not even relevant to be here!"
At one point, Adele, 30, is seen on stage introducing herself to the night's Drag Queen host, Brita Filter , as part of a game.
When asked what she does for a living, she's heard saying she's a "stay-at-home mother," much to the joy of the crowd.
When Adele is forced to do a forfeit at one point in the night, Lawrence shouted: "How can you f------ lose?" and the host can be heard yelling: "Jennifer, this isn't The Hunger Games!"
Understandably, people in the bar took to Twitter to share their amazement at the evening's turn of events.
"Randomly getting turnt with JeLaw and Adele. NBD," one said.
"I just partied with Jennifer Lawrence and Adele.... I am speechless," another wrote.
Some were clearly in shock.
"Fridays have truly lost the plot," another tweeted.
Finally, one user suggested: "The idea that Adele could be at any gay bar at any time... the gays aren't safe."