I think it's somewhere here.
http://www.youtube.com/watch?v=WwCwrNwW8Vg
I haven't watched the video myself. Hyorin was getting some flak for speaking informally so both she and Tara had to clarify things for the dummy netizens.
EDIT
Just watched it and it starts at 2:15
dying.
Choco you understand Korean?