Expression commonly used by Asian or sub-Asian people to mean "[sigh]," "oh man...," or "blah"
The expression is also used as a temporary stress reliever during the course of a tense anime episode.
Also see: [aiya]
> Asian: "Aiyah, white people no getting anything I said."
> Non-Asian: "Sorry, but what is 'hiyaa?'"
> Asian: "DO I LOOK LIKE NINJA TO YOU?! Aiyaahhh"
> Non-Asian: "I'm sorry but I don't understand."
> Asian: "You stoopid boy, no more fry rice, aiiyaaa!"
> "Aiyah, Naruto sucks now."