firecracker

Etymology

fire + cracker

noun

1. A small explosive device, typically containing a small amount of gunpowder in a tightly-wound roll of paper, primarily designed to produce a large bang.
   She said she was awakened abruptly Friday night by the kid next door setting off a firecracker. 2011, Ken Casper, As the Crow Dies, page 120
2. A peanut butter cracker baked with marijuana, similar in concept to an Alice B. Toklas brownie.
3. A person or thing that is exciting and/or unpredictable.
   Jude Bellingham became the nation’s second youngest World Cup scorer behind Michael Owen when he started the rout – the centrepiece of a performance of power, skill and precision – while Bukayo Saka deserved his two goals, the first a firecracker, as he radiated menace with his every involvement. 21 November 2022, David Hytner, “England open World Cup in style with Bukayo Saka double in 6-2 rout of Iran”, in The Guardian