[Photos by: Justin Bieber/Instagram, Barneys New York, Marilyn Manson/Instagram]

Looks like Marilyn Manson has a bone to pick with Justin Bieber, going so far as to call the pop star a "piece of shit." It all stems from—what else?band T-shirts. Read about the Antichrist Superstar's beef with Biebs below.

Read more: Op-Ed: Why the world needs Marilyn Manson right now

Bieber is apparently just one of many pop culture icons to repurpose old band T-shirts; he's sported Nirvana and Metallica tops in the past. According to Consequence Of Sound, Bieber started stylin' a repurposed Marilyn Manson T-shirt last summer, one that featured his own branding emblazoned on top. (Does this sound familiar?) The reused Manson tee reportedly featured the added phrase, "Bigger Than Satan... Bieber," and sold for $195 at Barneys.

Bieb's peeps claims they got the go-ahead from Manson's clan to reinterpret the tee in this manner. But Manson himself has a different take, and he says Bieber used some haughty language when the two first discussed the shirt.

"He was [already] wearing the shirt that had his name on my shirt, and he said to me, 'I made you relevant again,'" Manson recalls. "Bad mistake to say to me. ... He was a real piece of shit in the way he had the arrogance to say that."

Manson adds that Bieber contended the whole T-shirt collab "was his idea," and that the next day, "I told him I'd be at his soundcheck at Staples Center to do 'Beautiful People.'" Manson seemingly never intended to show up to the soundcheck but Bieber "believed that I'd show up because he was that stupid."

Manson must Know Where Biebs Fucking Lives, because he "took all the proceeds from those shirts from him," claiming that Bieber's people had no problem with coughing up the cash. "They didn't even fight, they were just like, "Yea[h], we already know, we did wrong, so here's the money."

Sounds like these two need to swap shirts and make up.

Marilyn Manson's new album Heaven Upside Down is out next month—hear the new single, "We Know Where You Fucking Live," right here.

Watch more: Marilyn Manson wins the 2016 APMAs Icon Award