From my youth in England I seem to recall something called 'Brighton Rock' or somesuch?
It was an enormous cylinder of rock hard sugar that required you to break it into pieces and then suck on it. As I recall, it tasted of nothing but sugar.
Even as a child I struggled to understand the attraction.
Americans say soda, Canadians say pop. Pop because the original carbonated drink had a spherical glass thingy you pushed down to open the bottle. It then logged in the bottle itself so you could drink it and pushing it down produced a popping sound.
Bit of carbonated drink trivia for you there chaps.
Just rock - although I guess if you bought it in Brighton it would be Brighton rock. Most seaside places would have it. My Great Uncle Jimmy had a sweet factory in Cork, where we used to go every summer and watch all the goodies being made. The raw goo that became rock was basically like crack