Tyson Fury and Deontay Wilder kicked off their final press conference with a shoving match before Sunday's (NZ time) WBC heavyweight title rematch.
As soon as the two men walked onto the stage, Briton Fury got right in Wilder's face, singing and taunting the American champion.
Wilder kept his composure well until finally losing his patience and pushing Fury away, with the challenger then replying in kind, before security staff quickly waded in.
As the slanging match continued, Fury claimed to have raised Wilder's profile and stock, only for the American to taunt his rival about his mental health issues.
"Don't you ever forget that when I found you, you were strung out on coke," said Wilder. "You were like a big house, contemplating killing yourself.
"Don't you ever forget who brought you to big-time boxing. I brought you back, dragged you back, I put food on your table for your family to eat and I'm doing it again for a second time.
"I'm the one who sells the pay-per-view and tickets. They come to see me."
Fury, unsurprisingly, took Wilder to task over the taunts about suicide.
"I was the man who beat Wladimir Klitschko," said the Briton.
"I gave you your biggest payday. You're a bum - nobody even knows you in your own country."
Responding to more goading about suicide, Fury said: "And that's the man you take on? A man thinking about killing himself?
"You thought you were getting an easy victory, didn't you? Well it didn't work out - I came back and kicked your arse all over."
Join us for live updates of Wilder v Fury II from 3pm Sunday.