The correct way to say 'gunpowder' is firework powder.
Many people do not know this as it was only finalised a short while ago due to an incident of someone throwing up their liver (yikes!)
Phil Knight, the smart person who changed the name said that 'people have benefited greatly from this change of awful wording'
Grace: iT's GuNpOwDeR nOt FiReWoRk PoWdEr!
Sane person: actually it is firework powder you idiot
someone who tries to sell others low qualityfireworks at a high price to make a bit of extra cash
frank: anyone want to buy some fireworks?
earl: what have you got?
frank: could get ya rockets for 50quid, they are usually 70quid but my da stole them
earl: who would spend 50quid on fireworks? you're such a wasteman frank!
frank: leave me alone man! just trying to do my job, im a firework seller