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The Johnny Knoxville Stunt That Terrified His Jackass Co-Stars

Since 2000, the cast of "Jackass" has been filming themselves doing the most extreme, absurd, and dangerous stunts for the love of the game. Their daredevil antics spawned a successful franchise, including three seasons on MTV, various spin-off shows, and several feature-length films.

Whether they're branding one another, being launched into the air in a used Porta-Potty, or crawling across a floor covered in mouse traps, the stunts of "Jackass" are always equal parts body horror and slapstick comedy. More than two decades of chaos later, the upcoming film "Jackass Forever" is said to include the most painful stunts they've done so far (via The Nine Club).

Two weeks into shooting "Jackass Forever," Steve-O and Johnny Knoxville were hospitalized after being injured while "jumping on a full-speed treadmill with band equipment." Anyone familiar with the franchise shouldn't be surprised by this, but what does come as a surprise is hearing which Knoxville stunt consistently terrifies his co-stars.

Working with bulls is 'horrifying'

In an interview with Collider, "Jackass" stars Steve-O, Wee Man, and Chris Pontius revealed that being in front of bulls is always "horrifying" — but that hasn't stopped them from doing it. Some of the most memorable "Jackass" bull stunts include Yoga Ball, where Wee Man holds a bright red ball up so a bull charges at him, and The Running of the Bulls, where the cast gets chased through a suburban street.

While they've all participated in bull stunts, they agreed that seeing Johnny Knoxville work with bulls is stressful. "Watching Knoxville get in front of the bulls is the hardest," Steve-O said.

Some of Knoxville's bull-related stunts include The Invisible Man, where he attempts to hide in plain sight to avoid a bull, and the Toro Totter, a four-way teeter totter where they must jump to avoid the bull's horns. He won the latter stunt but was attacked by the bull, anyway.

Pontius said that they're always "wondering if it's gonna be too bad" because of the bull's size and strength.

"You never know what's gonna happen," added Wee Man. "You could be impaled by one of its horns, anything can happen."