Kim Yuna
In October 2007, Park acquired another nickname, "worthless elder brother" (하찮은 형) after co-host Noh Hong-chul referred to him as a "worthless person with a worthless body" (하찮은 박명수님, 하찮은 몸) in comparison to world-class Figure skater Kim Yuna. Another related nickname is "Father" (아버지) since he is the oldest among another "Infinite Challenge" members and due to his weak stamina and slowly balding forehead.