Updated | May 7, 1:30 pm Donald Trump launched into a bizarre riff on Thursday night, denying climate science in remarks to West Virginia coal miners by comparing the regulation of their industry to the ban on something closer to his personal experience: aerosol hairspray.

After being presented with a miner’s helmet by the West Virginia Coal Association, an industry group that endorsed him, Trump briefly put it on to do a broad impression of a miner digging with a shovel. He then removed it and asked the crowd if the helmet had messed up his hair, which triggered a lengthy tangent on the good old days, before aerosols were phased out.

“My hair look okay?” Trump asked the crowd. “Got a little spray — give me a little spray.”

“You know, you’re not allowed to use hairspray anymore because if affects the ozone. You know that, right?” he said to laughter. “I said, ‘You mean to tell me’ — ’cause you know hairspray’s not like it used to be, it used to be real good,” he added, to more laughs. “Give me a mirror. But no, in the old days, you put the hairspray on, it was good. Today, you put the hairspray on, it’s good for 12 minutes, right?”

“I said, ‘Wait a minute — so if I take hairspray and if I spray it in my apartment, which is all sealed, you’re telling me that affects the ozone layer?'” “‘Yes.'” I say, no way, folks. No way!”

“No way!” he added to cheers. “That’s like a lot of the rules and regulations you people have in the mines, right? It’s the same kind of stuff.”

The regulation of mining in West Virginia, and elsewhere, might not be popular with the industry trade association that endorsed Trump, but it has helped to safeguard the health and save the lives of many of the workers in the mines. Just last week, the United Mine Workers of America hailed a move by the Department of Labor to better implement the Black Lung Benefits Act by giving miners “greater access to their health information, bolster the accuracy of claims decisions, and require coal mine companies to pay all disability or survivor’s benefits due,” a West Virginia news channel reported.

The coal industry group’s backing of Trump at the event was widely misreported by his supporters online as something like its opposite — the endorsement of a union representing miners.