According to Steve-O, the Jackass cast barely got paid anything by Paramount Pictures in the first movie. He said in the H3 Podcast that he only made $65,000 from its $80,000,000 gross.
According to the DVD commentary, the two angry gentlemen who were the victims of the "Golf Course Airhorn" stunt would originally not sign a release form to be featured in the movie until the production crew took them out for a few drinks. The two gentlemen eventually agreed to sign their permission.
When Johnny Knoxville claims that he was Lon Chaney's lover after being thrown out of the liquor store, Knoxville actually had no clue who Chaney was. He saw Chaney's star on the Hollywood Walk of Fame as he was thrown out and thought it would be a funny thing to say.
Loomis Fall came up with the idea of the "night pandas" segment because he wanted to go to Japan. The crew agreed to bring him along simply because nobody had the heart to tell him that pandas are from China, not Japan.
Mat Hoffman, Steve-O, Bam Margera and Johnny Knoxville all suffered serious injuries during filming. Hoffman broke his wrist when he fell off his bike during "Sweaty Fat Fucks" and was also knocked out in the same incident, Knoxville was knocked out when his golf cart flipped over and again when he fought Butterbean, Bam tore his hamstring at the beginning of the movie's production, and Steve-O developed a serious infection when he fell into a contaminated river in "Poo River Pole Vault" (DVD only), which was later edited into "Tropical Pole Vaulting".