A greeting to a friend who is leaving a party or social gathering when it's the first time you've seen them all night, even though you've both been at the same party the whole time.
Derek (appearing suddenly from other room): "It's getting late dudes, I gotta jet. Catch you later."
Jon: "Hey Derek! I didn't know you were here. Alright guy, what's-up-see-you-later."
Jon: "Hey Derek! I didn't know you were here. Alright guy, what's-up-see-you-later."
by jonnywords June 14, 2011