quicko: can't be what?

I lived in Australia for literally years before it came out that when all this time I thought Australians were just lazy buggers saying they "couldn't be asked" to do anything (as they do quite regularly any time they don't feel like doing something), they were in fact not saying "asked" at all, but were using an extra s instead of a k in the middle.  Far be it from me to reproduce their vulgar idioms, but can you believe it?

And to think, I thought they were merely being lazy the whole time.