The term gobstopper derives from "gob", which is slang in the United Kingdom and Ireland for mouth. ... Gobstoppers are too hard to bite without risking dental damage (hence the name "jawbreaker"). Gobstoppers have been sold in traditional sweet shops for at least a century, often sold by weight from jars.

Can jawbreakers actually break your jaw?

Jawbreakers are extremely hard and you could injure your jaw or even break a tooth. Avoid biting or chewing on the jawbreaker until it's really small and soft. Hard candy is one of the most common things on which kids can choke.

Do jawbreakers have gum in the middle?

Jawbreakers are probably the hardest candy there is. ... Some are solid in colour, and some have that multi-coloured, marble like effect on them, making them even more irresistible to our candy hungry eye. Some of them have a wad of gum in the middle, sort of a reward for getting to the middle.