If you've seen Logan, you'll know the latest X-Men film doesn't hold back - and seemingly neither did Hugh Jackman during the making of the movie.
Letting out some anger in the studio, Jackman shared a clip of the audio recording as he over-dubs his screaming, roaring and panting.
It's hilarious out of context - but also hugely impressive.
Wired up to a microphone and headset, Jackman runs on the spot, lashes out with his fists, snarls and yells, making animalistic expressions.
The Logan scene sees the X-Men mutant finally unleash his full 'berserker rage' attack on screen, with Jackman running through a forest and fighting off several men.
Logan is the tenth film in the X-Men series, and follows a past-his-prime Logan embarking on a road trip across a dystopian future America for one last mission.