The Jackass boys are back, with their latest movie offering centred on an 86-year-old grandpa.
Directed by Jeff Tremaine and co-written with Johnny Knoxville and Spike Jonze, Jackass Presents: Bad Grandpa follows Irving Zisman, an unconventional grandfather, played by Knoxville.
At the film's UK premiere in London yesterday, Knoxville explained what his character gets up to.
"He's been in a marriage for 50 years and thinks he's going to get a little yum yum, but then he gets a little kid dumped on him.
"And I have to take him across country, and along the way we pulls pranks on everyone. So you get the pranks of Jackass, but we have a little narrative and the kid is amazing. Jackson's around, that's why I have my hand over my ding ding."
Bad Grandpa is the fourth movie from the Jackass gang, who originally featured in an US reality television series.