This is yet another slang term that derived from a small and special group from
wilmslow. Windy was the first person to use the word on a regular basis, it was so ifectious that the whole group(
Nel,Neil,
Tommy D, Dani, Arron, Chuckles etc) were saying it at alarming rates.
It can be used as a greeting 'a what you
shexy mofo'
It is also often used as a sign of being pissed off 'a what, so you wont
give me head?'
Also it is often used to express
suprise or shock 'a what, you have to be kidding!'