Dan Mazar in the director’s chair…

Zac Efron (‘Bad Neighbours’) and Hollywood legend Robert De Niro are reportedly looking to team up for a road-trip comedy titled ‘Dirty Grandpa.’

Per THR, the film would see Efron playing an uptight young man “who is tricked into driving his grandfather, a perverted former Army general who thinks his grandson is about to marry the wrong woman, to Florida for spring break.

Dan Mazar (‘I Give It a Year,’ ‘Da Ali G Show’) is attached to write and direct, with Barry Josephson is producing.