Rob Zombie and Marilyn Manson, who are currently on their joint Twins of Evil Tour, are reportedly not getting along.

During their DTE Energy Music Theatre on Friday night, the two frontman traded verbal jabs at one another while onstage after Manson stated that Rob Zombie of cut his set short.

"I'm going to kick his a**," said Manson, near the end of a set that lasted about 80 minutes. Manson made the threat after he told the crowd he wished he could've been able to perform more songs.

Once Zombie took the stage, he laughed off Manson's threat and declared, "Some tours just don't go (expletive) together," yelled Zombie, after he told the crowd Manson didn't even attempt to "kick his ass" during intermission. Zombie added that he was tired of Manson's "rock star (expletive)" and said something about hoping Manson enjoyed the show because it could be his last.

Zombie then fired more insults at Manson's near the end of his own 90-minute set. The singer, paying homage to Detroit rocker Alice Cooper, covered Cooper's hit song School's Out, and filled it with several expletives directed at Manson.

"(Bleep) you Marilyn Manson!," Zombie yelled several times, along with other choice words including "suck it Marilyn Manson!" See videos below.

Zombie not only cussed the shock rocker out during the song, while Manson was nowhere in sight, but also called him "Brian," referring to Manson's birth name - Brian Warner.

Rob Zombie and Marilyn Manson began their Twins Of Evil Tour on September 28th in Phoenix, Arizona. The tour is scheduled to end on Rocktober 31st in Dallas, Texas before heading off to Europe.