When on Jackass, Lacy is most often featured with Jason “Wee-Man” Acuña and their most common skit involves Lacy chasing after Wee-Man down public streets in nothing more than their briefs and white T-shirts, showing off his obesity. Lacy has contributed many of the ideas that later became Jackass skits and stunts. Preston is also known for his anger outbursts, the most memorable of which occurred during “The Eggnog Challenge”, where Preston passed out and fellow contestant Chris Nieratko puked in Preston’s hat and put it back on his head. Preston then started ripping down the Christmas decorations and flipping tables before storming off. He and Chris hug and make up at the end of the episode, as the credits roll. Lacy shares a writing credit for National Lampoon’s TV: The Movie.
He has been on tour doing stand-up comedy, notably the BBM Comedy tours in New York and Florida, as well as festivals, clubs and bar rooms all over the country