An 18-year-old teenager has lost his hand while playing with a firework outside a California In-N-Out Burger.

Nader Hanna had graduated from high school just three days earlier when he met up with his twin brother and friends outside the popular burger chain in Pleasanton on June 3, the SF Chronicle reports.

The group had gone to grab food and set off fireworks in the parking lot — something Hanna said they had done on numerous summer nights.

A classmate handed him a firework about the size of a tennis ball, which exploded almost immediately after he lit it.

“It just exploded in my hand the second I lit it,” Hanna told the SF based paper. . “My hand took the whole blow. I looked down and I didn’t see a hand. It disintegrated.”

The blast severed Hanna’s right hand. The 18-year-old, who is left-handed, is now learning to navigate daily life without his non-dominant hand, making once-simple tasks like brushing his teeth, putting on socks and driving significantly harder.

His twin brother, Ramsey, called 911 before frantically searching the ground for pieces of his brother’s hand to take to the hospital.

Friend Kevan Mokashi ran into the restaurant to get someone else to call emergency services while police officers applied two tourniquets before paramedics arrived.

“His hand just looked like it was put in a blender, it was just flesh,” Mokashi said. “There was no hand, it was just spewing blood everywhere. We were all freaking out.”

Doctors were unable to save Hanna’s hand but were able to preserve his wrist.

Hanna believes the foil-wrapped firework was faulty, though Pleasanton police Lt. Nicholas Albert said investigators believe it was an illegal firework rather than one classified as California’s legal “safe and sane” variety.

Officers did not cite Hanna because of the severity of his injuries, and police said there was not enough evidence to pursue a criminal investigation into the sale or distribution of the explosive.

The accident has become a grim warning ahead of the Fourth of July holiday, when fireworks injuries surge across the country.

The Pleasanton Police Department cited Hanna’s case in a public warning, saying, “This incident is a powerful reminder of how quickly fireworks can change lives in a matter of seconds.”

Despite missing graduation celebrations and postponing the start of college, Hanna said he is focused on recovering and hopes to eventually be fitted with a prosthetic.

“It just motivated me to be better, for the future,” he said. “Now I have to be someone great. I can’t be an average dude now since I don’t have a right hand.”

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