How to translate fireworks as rhyming slang in maledicta [and if any seem old-fashioned, they are!]:
bam = damn
bang = bang [fornicate]; dang
blam = damn
blast = blast[-it] [British]
boom = bum [British for buttocks]
burst = cursed
crack = cack [British for excrement]; whack[-off]
fizz = shit
flash = ass; dash[-it all] [British]
hiss = piss[-off]; shit
pop = pop[-off]
snap = crap
sputter = mutter[-fucker]
whistle = rissole [Australian slang for rectum]
whizz = wiz [urinate]
whoosh = gadzooks
zip = flip[ping] [British]
bomb = "f-bomb"
missle = miserable
mortar = mortar-fucker
flare - swear
rocket = fuck it
shell = hell