Anticipation for this film has just soared to new heights. Today, Paramount Pictures revealed the no holds barred trailer for their new film Jackass Presents: Bad Grandpa. The moviefollows 86 year old Irving Zisman (played by Johnny Knoxville), on his journey across America with his 8 year old grandson Billy. Real People in unreal situations, making for one really messed up comedy. Bad Grandpa hits theaters October 25.