Origin of bangerbang + -er: uncertain or unknown; perhaps from resemblance to a thick club used for banging
- A sausage.
- A noisy old car.
- A firework that explodes with a sudden loud noise.
bang + -er; the sausages were so called because of the risk of explosion if not carefully cooked, due to excessive amounts of water stored inside the sausages to increase their mass and saleability.