a'ight then
It's a word that means 'all right,' but you're too lazy to say it properly and you're probably being a bit of a smug ass about it.
A'ight then, I'm going to sleep. Don't bother me unless you're bringing pizza.
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.