Say What?

You know you're out-of-touch when you have the following conversation with your 13-year-old daughter:

Me: What a beautiful day.
K: I-K, R?
Me: What?
K: I-K-R, Mom. I know, right?
Me: You know what?
K: Ugh. Dat's booty, Mom.
Me: What did you say?
K: Booty, Mom. You know. Boo-ty. The opposite of beast.
Me: Beast?
K: Yeah. That's beast. It means something is awesome.
Me: Awesome! Yes! Yes! I know that one!
K: Awesome? Ha. That was deep ago.
Me: You mean long ago?
K: You're hopeless.
Me: I-K, R?