2NE1's Sandara Park and MBLAQ's Thunder were both appeared on the same episode of a TV program for the first time.

In the September 28th episode of KBS 2TV "Win Win," younger brother Thunder visited the set to cheer his older sister Sandara Park.

A sudden 'new-visitor' music came on as Sandara was talking about her popularity in the Philippines. The mysterious silhouette behind the doors was none other than younger brother MBLAQ's Thunder.

It's known that Sandara calls Thunder "dog poopie." 2NE1 members commented, "Sandara becomes a motherly-woman when it's about her younger brother. She says, 'Aigo, our dog-poopie,' and talks in this old lady tone."

Sandara replied, "Isn't everyone like that?" and showed embarassment. CL spoke, "This is actually my second time seeing Thunder. Since Sandara kept saying dog-poopie, I said, 'dog-poopie ssi!' when we first met!" and told about the story of first meeting Thunder.