Miss A's Min celebrated her birthday yesterday, June 21, and f(x) Amber greeted her with an ironic photo she has posted on instagram.

Even though it's Min's birthday, her dorky friend posted up a photo wherein Min is carrying Amber's leg and appeared having a hard time which is captured in her face.

Contrary to the picture, Amber expressed, "happy bday to my sis and zombie buddy the MIN MIN! love ya~~".

Only closest friends can mock their friends on their birthdays like this.