Here’s one sign of aging Botox can’t fix.

Apparently, how millennials break it down on the dance floor will give away their age, according to Gen Z club rats.

A millennial TikToker named Gus admitted to his recent faux pas after hitting the town recently — where he encountered an enthusiastic Zoomer who poked fun Gus’ more, er, mature dance moves.

“She was like, ‘You know what’s giving away your age?'” he said in a viral clip that has already amassed 2.4 million views. “She was like, ‘You keep putting your hands up.'”

Every time he would raise the roof, so to speak, the Gen Zer would police his arms, telling him to stop throwing his hands in the air.

“I was like, ‘I’m too old to be in this club,'” Gus lamented.

Fellow millennials — many of whom were raised by the hiphop duo Outkast, who famously demanded their fans keep things elevated at all times, in a casual manner — were outraged by younger generation’s rewriting of the dance floor rules.

“We were literally instructed to put our hands in the air like we just don’t care. It’s our legacy,” argued one aging creature of the night.

“But how will the roof get raised?” quipped someone else.

“Everybody hands go up! And they stay there!!” another quoted the lyrics to a DJ Khaled tune.

“Being a Gen Z sounds exhausting,” criticized one user.

“So all the single ladies put your hand down,” bit back one person with a nod to Beyoncé.

“How to you point to the window then to the wall?” someone else wrote, quoting Lil John’s “Get Low.”

“Sir, I can not shake it like a polaroid picture with my hands glued to my sides,” joked another, referencing Outkast’s “Hey Ya!”