Mum Jokmok (born Petchtai Wongkamlao on June 24, 1965) is a prolific Thai comedian, actor, and film director who stands as one of Thailand's most recognizable and influential entertainers. After establishing himself in the Bangkok "café" comedy scene and rising to national fame as a regular on the variety game show Ching Roi Ching Lan, he achieved significant international recognition for his role as George (or "Dirty Balls") in the martial arts hit Ong-Bak: Muay Thai Warrior (2003) and its follow-up, Tom-Yum-Goong (2005), alongside Tony Jaa. A versatile creator, he has written, directed, and starred in several of Thailand's highest-grossing domestic comedies, including the action-spoof The Bodyguard (2004) and the culturally significant Isan-language musical comedy Yam Yasothon (2005), for which he received critical acclaim for returning to his rural northeastern roots.