The Aussie actor, who's been promoting Robin Hood at the Cannes Film Festival, took umbrage during a recent BBC Radio 4 interview when host Mark Lawson said he heard hints of Irish in Crowe's character's voice.
"You've got dead ears, mate," Crowe, 46, said, "seriously dead ears if you think there's an Irish accent."
"I'm a little dumbfounded you could possibly find any Irish in that character," he continued, after delving a bit into the Robin Hood's background. "That's kind of ridiculous, but it's your show."
And that wasn't the end of it. When the journalist asked Crowe if the accent was supposed to be northern English, Crowe grew testier.
"No, I was going for an Italian," he said. "Missed it? [Expletive] me!"
The last straw? When Lawson brought up rumors that the actor never wanted to say the famous line, "I'll take my revenge in this life or the next," in 2000's Gladiator, which won him a Best Actor Oscar.
Not answering, the actor unhooked his microphone and walked out, simply saying, "I don't get the Irish thing by the way."