Fans of Oscar-winning actor Cillian Murphy were left in stitches after the star discovered he was the muse behind a massive Hozier hit. The Oppenheimer actor, it seems, unknowingly inspired one of his fellow countryman's most popular tunes. Murphy's hilarious reaction to this revelation during an appearance at the Toronto International Film Festival (TIFF) had fans in fits of laughter.

Murphy graced the TIFF red carpet to promote his forthcoming Netflix film, Steve. Amidst a flurry of questions from journalists, one reporter asked how it felt to be the inspiration for a chart-topping song that Hozier has belted out at major events like Finsbury Park and Leeds Festival.

The song in question, Too Sweet, was reportedly sparked by a flight Hozier shared with Murphy, during which the musician was bleeding and hungover.

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He recounted: "I'm like rattled. You know, that type of hangover where you're shaking. And then I look over to the left of me on this plane and I see a famous Irish actor."

"I'm also subject to celebrity shock where you see somebody you've seen on screen a thousand times and you're like, 'Oh my God, that's a famous person'. And when I see Cillian Murphy is to my left... "I'm like, 'Oh my God, that's wet'.

So I'm on the plane looking at my fingers, like I'm bleeding a little bit. "And I turn to my left and Cillian Murphy's hunkered by my seat and is like, 'How's it going?' I'm trying to play it cool. He was so sweet and so kind."

Although Murphy provided the inspiration for the track, it appears he was completely unaware of it until recently.

The 28 Days Later actor discovered his influence on the song during an appearance at the Toronto International Film Festival. Murphy remarked: "Oh, I don't know that story. I remember I did meet him on a plane once, I don't know that he was bleeding."

Murphy's reaction has left some fans in hysterics. One supporter commented: "Does Hozier have any normal stories?" Another added: "Nonchalant final boss."

A third suggested: "Probably meant 'bleedin' hungover' as in Dublin slang, not literally bleeding." The chart-topper then clarified which lyric Murphy had sparked.

Hozier revealed: "It's the line, 'I aim low, I aim true and the ground's where I go'. I've never told Cillian Murphy that, I've never met him since. I didn't have the guts to tell him at the time the shape that I was in."

Nevertheless, Murphy is now aware, and he appears rather indifferent about his pivotal contribution to the track.

One admirer wrote: "He couldn't act more interested." Another observed: "The day we learned Cillian Murphy is not a fan of Hozier." A third noted: "It's like he wasn't even there."