a'ight then - It’s like saying 'all right' but you're too lazy to spell it

It’s like saying 'all right' but you're too lazy to spell it right and you're being a bit of a smug prick about it.

A'ight then, I'm going to fail this test. Don't expect me to care.

A'ight then, I'm leaving. Don't expect me to be nice about it.

A'ight then, I'm done. I'll see you when you're ready to admit I was right.