Olivia Munn, Jennifer Lawrence and Michael Fassbender of X-Men: Apocalypse took part in a hilarious table read of the 1998 Coen brothers hit comedy The Big Lebowski.

The reading of The Big Lebowski, a cult-classic film that starred Jeff Bridges, Julianne Moore, Steve Buscemi and John Turturro, took place during Friday’s Just for Laughs Festival in Montreal.

Also helping out at the festival were Patton Oswalt, Dennis Quaid, Mae Whitman, Mike Judge, Martin Starr and T.J. Miller, People magazine reported.

Olivia Munn and her co-stars took part in the celebrity reading that was organized by director Jason Reitman.

A crowd of about 1,300 were treated with the reading.

Jennifer Lawrence And Olivia Munn Have Hilarious Mix-Up At 'The Big Lebowski' Reading (VIDEO) http://t.co/6IGQxh7z3c pic.twitter.com/5QpfGxOEaj

— Gossip Cop (@GossipCop) July 25, 2015

According to UPI, one of the funniest moments came when Oliva Munn, who was reading the lines of Bunny, accidentally read a line meant for Jennifer Lawrence, who was reading Maude’s lines. The error resulted in complete confusion for the cast.

Jennifer Lawrence, Michael Fassbender and Olivia Munn walk into a Big Lebowski live reading… http://t.co/SBCWaBaOHH pic.twitter.com/2F5Q7R36U5

— People magazine (@people) July 25, 2015

“It was highlighted, mother[expletives,]” Olivia Munn said before switching script pages with Jennifer Lawrence.

“We’ve been waiting three hours to get to my part and it’s all falling to [expletive,]” Lawrence joked about the error.

Michael Fassbender, Jennifer Lawrence @pattonoswalt – LEBOWSKI LIVE READ #JFLMTL pic.twitter.com/1VXkhdXb3i

— JFLComedyPro (@JFLComedyPro) July 25, 2015

For Friday’s table reading, Michael Fassbender read the part of The Dude (originally Jeff Bridges) while Jennifer Lawrence played Maude (Julianne Moore). Patton Oswalt played Walter (John Goodman), Olivia Munn was Bunny (Tara Reid) and Dennis Quaid made a surprise appearance as the Big Lebowski (David Huddleston).

Well done Olivia Munn!