Johnny Knoxville in Jackass Presents: Bad Grandpa (2013)

Johnny Knoxville and Jackson Nicoll in Jackass Presents: Bad Grandpa (2013)

"BAD GRANDPA" Behind the Scenes: Makeup Effects Designer Tony Gardner and Digital Artist Lilo Tauvao (L to R) refine the design concept for Johnny Knoxville's "Irving Zisman" character for the Paramount feature film "Jackass Presents: Bad Grandpa."

Johnny Knoxville and Stephen Prouty in Jackass Presents: Bad Grandpa (2013)

Jeff Tremaine and Jackson Nicoll in Jackass Presents: Bad Grandpa (2013)

Johnny Knoxville and George Prisco in Jackass Presents: Bad Grandpa (2013)

Jackson Nicoll in Jackass Presents: Bad Grandpa (2013)

Tony Gardner in Jackass Presents: Bad Grandpa (2013)

Spike Jonze, Tony Gardner, Johnny Knoxville, and Stephen Prouty in Jackass Presents: Bad Grandpa (2013)

Spike Jonze in Jackass Presents: Bad Grandpa (2013)

Tony Gardner and Stephen Prouty at an event for Jackass Presents: Bad Grandpa (2013)