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1.
Most commonly used to convey a sense of unexpected chagrin, with attendant bewilderment at the improbable machinations which have led to the event in question.

Another sense of the word attempts to express the idiotic glee and inexplicably transcendent and yet somehow poignant silliness of certain artist works, particular in popular music.

Variant teutonic spelling: "ahein"
"I went round to give me girlfriend her birthday present only to find that she'd emigrated to New Zealand with the milkman - it was completely ahine!"

"I saw a clip Roxy Music on Whistle Test in 1972, they were like wearing fly-eye glasses and feather boas and werkin' it with mellotrons and VCS3s and echoplex madness, it was just completely ahine!"
by David Ewart Davis May 31, 2006