America’s guilty pleasure has returned to the big screen in “Jackass 3-D.”

Johnny Knoxville, Jason ‘Wee Man’ Acuña, Steve-O and the rest of the gang build up their nerves, discard their dignity and rack up the laughs in their collection of stunts and gags that, despite the hardly necessary addition of 3-D, still is “Jackass” through and through.

The group’s formulas for success remain unchanged — gags and elaborate stunts that include painful slapstick, grueling real-life potty humor and silly props. They still manage to shock and awe comically with slow motion sex toys flying across the screen and sweat cocktails.

The 3-D feature of this movie feels ancillary. It only works when debris or a projectile is flying towards the screen and otherwise hardly adds much to the experience.

The once childishly young cast starts to show their age in this third installment of the series. Johnny Knoxville seems to sit out most of the stunts, and his reckless abandon in doing the more extreme and physically painful stunts is missed. Steve-O also shows much more apprehension when doing his stunts, but that makes the anticipation all the funnier.

Fads may come and go, but people never seem to be completely tired of seeing other people hurt each other like the pros do in “Jackass 3-D.”

“Jackass” was written by Preston Lacy and directed by Jeff Tremaine.