SNSD performed 'Hahaha' at South Korea's airport.
If you remember, Samsung takes Korea's hottest idols to perform a special 'Hahaha' song in order to get people to smile and laugh in these tough times. Last models being DBSK, and then taken over by SNSD. These songs are allowed for free download on Samsung's official site for ringtones and mp3.
How lucky are those people? My favorite Korean girl group performing for their fellow (citizens) people who they want to smile and laugh. It looked like so much fun! I'm glad everyone around them started dancing along and smiling as well! I wish they came to one of the airports I was at~ Hehe.