...from a letter from a sponsored child in Nigeria to his sponsor:
"Yes, banger is a kind of firework. It is graded according to the sound it produces. Example: one sound banger will produce only a sound, two sound banger will produce two sounds. Banger can also called knockout. The banger we have are from one sound to nine sounds. I can hold it and let it bang while I'm holding it. Though it is dangerous, you just need to be careful. It is more fun when you hold it."