Ozzy Osbourne recalls throwing buckets of water on a deaf crowd

If you're not going to rock out at an Ozzy Osbourne concert, prepare to get drenched.

That's the lesson a crowd of deaf fans learned the hard way after the rocker tried to teach them a lesson in concert etiquette.

Osbourne — who recently announced his upcoming world tour will be his last — recalled one of his more memorable gigs to Rolling Stone (and surprisingly, no stories involving bats made the cut).

"There was one night when I saw a bunch of people were not moving to the rock & roll — and if someone's not moving in the audience and not doing anything, I'll do the show just for that person and I'll start throwing buckets of water at these people," he said.

The former Black Sabbath frontman, 69, said he quickly realized that his now-soaked crowd wasn't grooving like he hoped for a very good reason: they were all deaf.

"Then someone told me the reason they're not moving or getting into the concert is because they're all deaf. And I felt like quite an idiot at the time, lashing them with buckets of water and hosing them down," he said.

"They were just standing there. Why does a deaf person want to go to a rock concert? I couldn't understand that. But I was told they feel the rhythm. It was quite interesting."

The British star is set to kick off his "No More Tours 2" tour this spring, though he insists he's not exiting the stage for good once things wrap up in 2020.

"I'm not retiring… I'm just not doing world tours anymore," he said. "I'm still going to be doing gigs, but I'm not going on tour for six months at a time anymore. I'd like to spend some time at home."