The phrase most commonly uttered when in all reality you do not care about what another party is speaking of. Also used when one does not actually here the other individual at all. Hints of underlying sarcasm often accompany this word. Or this is used to get someone off of your back who is annoying the hell out of you.
Prson 1-"Ok guys, we need to all stick together on this one ok? If we don't there is no way we can win..ok? ok? John! ok?"