Well, this is even scarier than the masks that Slipknot members wear! And that's saying a lot, because they're terrifying.
Slipknot guitarist Mick Thomson got into an argument with his brother Andrew.
Oh, did we say argument? We meant knife brawl. It's so easy to confuse the two, because one's a verbal fight, and the other's a verbal fight plus knives.
Apparently, the two were hanging out at Mick's home in Clive, Iowa when the stabbing sesh began, which left both seriously injured.
The two went Des Moines hospital on Wednesday with multiple stab wounds, and Mick was even stabbed in the head.
Both appeared to be extremely intoxicated, according to authorities. No word yet on whether or not it all began when one of the said, "you call that a knife," in an Australian accent.
So far no charges have been filed.