Why are brits called limeys?

Answer 1

The term is thought to have originated in the 1850s as "lime-juicer", and was later shortened to "limey". It was originally used as a derogatory word for sailors in the Royal Navy, because of the Royal Navy's practice since the beginning of the 19th century of adding lemon juice or lime juice to the sailors' daily ration of watered-down rum (known as grog), in order to prevent scurvy.