Zac Efron, Robert De Niro star in 'Dirty Grandpa' trailer
Thursday, October 29, 2015 - 11:20
in Earth & Climate
Annie MartinLOS ANGELES, Oct. 29 (UPI) -- Zac Efron and Robert De Niro party with Aubrey Plaza during spring break in Daytona Beach, Fla., in a first trailer for new comedy "Dirty Grandpa."