A phrase said when one honestlydon't care enough to listen, so they just pretend they actually just heard what was just said to them.
Friend: So, I went to the Mall this weekend, and I bought, like, a fab new skirt, and, then, I realized, like, OMG, I already had the same fab skirt! *Giggles At Stupidity Of What Was Just Said*
Me: *Rolls Eyes* Good for you.
You say this when your happy for the person your saying it to. You feel they deserve whatever good thing is happening to them, you mean well but feel detached and careless about it anyway.