firecracker

noun

Etymology: From fire + cracker.

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.”

2. A peanut butter cracker baked with marijuana, similar in concept to an Alice B. Toklas brownie.
3. Someone or something that is exciting, energetic, 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.”