Dirty Grandpa is a 2016 American comedy film directed by Dan Mazer and written by John Phillips. The story follows a lawyer named Jason Kelly who, in a twist of fate, is tricked into driving his foul-mouthed grandfather, Dick, to Daytona for spring break. The film features a star-studded cast including Robert De Niro, Zac Efron, Aubrey Plaza, and Zoey Deutch. Released in January 2016, Dirty Grandpa received mixed reviews from critics but enjoyed commercial success, grossing over $105 million worldwide.