By lighting large firework inside of truck cab while holding it in his hand. He will now be auditioning for the role of Captain Hook in the next version of Peter Pan.
https://nypost.com/2019/12/31/florida-man-blows-hand-off-after-lighting-firework-in-truck/
https://nypost.com/2019/12/31/florida-man-blows-hand-off-after-lighting-firework-in-truck/