When loads of good looking girls from all over the world converge on one place, like Ibiza, Miami or Rio, and some of them just excel above the rest... That's Internationally Good Looking.
Good Looking is also disambiguated as Fit and Hot, at least where I'm from...
A way of describing someone who you do not find attractive, however not horribly unattractive.
Also the only way to refer to a hot friend of your girlfriend.
A drunk friend of yours might find that fatwoman standing at the bar hot, however with a level head you might describe her as good looking (as not to insult his poor decision).
1. an expression of approval and thanks for a good deed, OR, 2. can be used in sarcasm to show disinterest in someone's actions or feelings
1. Miss Utility: "I'm not wearing any panties."
Tito: "That's whats up good lookin out!"
or
Danny: "I got laid off today. I need to look for a new job."
Tito: "That's whats up good lookin out?