Jason Acuña (born May 16, 1973), better known as "Wee-Man", is an American TV host and actor. He is one of the stars of Jackass on MTV and the host of NESN's skateboarding show 54321. Acuña has achondroplasia, a form of dwarfism, and is 4 ft 0.5 in (1.23 m) tall. He is also a professional skateboarder..