JC Chasez Jokes *NSYNC Bandmate Chris Kirkpatrick Needs 'Knee Cream' and 'Some Aspirin' to Perform

Chasez also poked fun at his own age, saying, “I’m wearing no shirt, and I’m pushing 50”

JC Chasez took a few friendly shots at *NSYNC bandmate Chris Kirkpatrick’s age, riffing on how Kirkpatrick, 53, might need some medical assistance to make it through a live performance.

“He'll probably need some knee cream. Probably need some aspirin,” Chasez, 48, joked with hosts Keltie Knight, Becca Tobin and Jac Vanek during an episode of LadyGang podcast released on Tuesday, Nov. 26. “We're different folks these days.”

Kirkpatrick’s Pop 2000 tour — which features 2000s superstars, like Brad Fischetti from LFO, O-Town, BBMak and Ryan Cabrera — is teaming up with LadyGang’s upcoming LadyWorld retreat in Destin, Fla., the hosts said. In advance of his arrival, they asked if they needed to prepare anything for him.

Related: Backstreet Boys' AJ McLean Reveals His Favorite *NSYNC Songs to Sing on Tour — and One's 'Raunchy' (Exclusive)

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"What does he need backstage? Does he have a backstage warm up?" the hosts asked Chasez.

That prompted Chasez to wisecrack about Kirkpatrick, who was the oldest member of their boy band and helped put the group together. (Other members of the boy band include Justin Timberlake, 43, Joey Fatone, 47, and Lance Bass, 45.) "He's very different than what he used to be," he said.

Chasez — who recently released the musical concept album Playing With Fire, a reinterpretation of Mary Shelley’s Frankenstein — also took aim at himself as well, saying, "I don't perform anymore."

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But if he does take the stage, Chasez joked, “I'm wearing no shirt, and I'm pushing 50.”

But jokes aside, the singer had nothing but love for his longtime bandmate, praising Kirkpatrick’s humor. “He is the funniest human on Earth,” Chasez said.

Chasez added, “He's witty and fast, and he'll throw jokes by you, and you'll realize that they landed, like, two minutes later. You'll go, ‘Wait, What — what the — what did he just say?’ “