It's really funny that Szilvi drank pure orange squash. Especially since it happened to me, as well:
When I first arrived in Britain, on my first working day I went to the next supermarket and bought some "orange juice". It was a really horrible juice - extremely sweet - but I bravely finished the whole bottle.
After a while one of my new colleagues asked me if I drank the whole bottle without water, because he could not see a water bottle on my desk. Once he finished laughing (took quite a while) he explained to me how to use squash correctly...
This will NEVER happen to me again