|1.||I'll call you back|
1.Usually meaning "why the hell are we still on the phone?" and no I'm really not calling you back you just think I am.
2.You've been on the phone too long talking about nothing.
1."Man, I got to go do the dishes. I'll call you back."
2. "My moms calling me (not really I just want to get off the phone) I got to go before she start actin' crazy, I'll call you back"