The X-Men: Days of Future Past co-stars appeared on chat series The Graham Norton Show and spent the entire interview joking, bursting into song, and treating the audience to a dance routine.
At the beginning of the show, Jackman joked that Fassbender needed coaxing to leave his trailer on set and they used the Robin Thicke hit Blurred Lines to get him in the mood to work. The men then left the show's set and returned as the controversial song played before doing a few choreographed moves while the audience screamed and cheered.
Throughout the interview, Fassbender regularly burst into song, particularly Africa by Toto, and showed the audience how he makes synthesizer noises with his mouth.
Fassbender and Jackman also randomly burst into song, giving lines from Shakespeare's play MACbeth the musical theatre treatment.
MCAvoy contributed to the bizarre atmosphere by punching Jackman in the arm, demonstrating a game the actors played on the film set. MCAvoy explained that he punches the Wolverine actor with full force and it does not affect him, yet when Jackman hits him with his hardest punch, MCAvoy ends up with a huge bruise on his arm.