firecracker

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.”

2. (slang)A peanut butter cracker baked with marijuana, similar in concept to an Alice B. Toklas brownie.
3. (slang)An individual who is quick-tempered, rambunctious, 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.”