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."
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)