The youngest Jonas brother tried to play it “cool.”

Nick Jonas stunned the audience on Tuesday after the former teen heartthrob fell feet-first into a square hole while performing at Boston’s TD Garden.

The 30-second clip, which was posted on a Jonas Brothers fan Instagram account, also manages to capture Jonas, 30, mouthing the word “ouch” before popping back up and running to join his brothers.

The Post reached out to Jonas and TD Garden for comment.

Several online fans also praised Jonas for continuing to sing despite the misstep.

“He stood up like an absolute savage,” wrote one impressed fan.

“Someone’s getting fired,” joked another.

According to fans, the hatch was seemingly left open by accident when the stage crew was using it to deliver chairs to the stage for the trio to use during their set. Apparently, someone forgot to close it.

The onstage misstep happened mere days after the brothers kicked off their “Celebrate” tour at New York City’s Yankees Stadium.

Jonas is not the only artist to experience an accident on stage.

During Beyonce’s Renaissance World Tour, the “Single Ladies” songstress had a heated argument with her stage crew after they failed to turn on a fan that would cool down the singer.

In a video that was posted to TikTok, Knowles-Carter, 41, can be seen gesturing to members of the stage crew to turn the fan on.

Annoyed at the delay, the former Destiny’s Child member points to a random crew member and then to the fan while throwing, what the TikTok user called, “bombastic side eye.”

Finally, the “Crazy In Love” songstress got the air she deserved and gave the crew an “ok” symbol to let them know that she was cooling down.

Taylor Swift also suffered a stage malfunction after her “Era’s” tour stage failed to open and the singer was forced to shake it off and bolt backstage for a costume change.