18. "Eyaaaa" used to be the standard English way to write a shout of pain or frustration. The modern, more familiar "Aaaagh", derives from British Imperial rule in India and "aag", the Hindi word for fire: it became widely known and popularised after a number of colonial administrators died due to failing to realise that locals were telling them about a fire that had started, which led subsequently to an increased awareness of the term among the colonisers.