2. A phrase used in moments when there is nothing else to talk about, and there is no reason to hang around with whoever you are/were hanging out with any longer.
3. A douchier way of saying "peace out"
4. A great way to hang up the phone.
5. "Cool story, bro. lol, pce"
Dumbass: Nah, that shit was wack, so I bought you Kidz Bop vol. 3 instead.
Dude: ...hasta la sayonara.
(Dumbass plays "Soak Up the Sun")
Dude: gtfo my house, man.