The crescent moon-like shape the eye curves into when someone smiles. It is found as an attractive characteristic and commonly associated with Korean/Asian culture.
Girl 1: Who do you think has the best eye smile in KPOP?
Girl 2: I really love Taeyang's eye smile.
Girl 3: Me too, but I think Tiffany from SNSD has the best eye smile.
1) getting your cray on (see definition for cray)
2) getting crazy, wild, stupid
3) a wax-made colorful writing utensil that is responsible for most artistic childhood memories...the red ones taste the best
as made famous by Korean rapper G-Dragon in his song "Crayon"
Guy 1: You still coming to the party?
Guy 2: Yeah man gotta get my crayon