Buzznshare | Oct 28, 2015 04:05 PM EDT

'Dirty Grandpa' Trailer Teases Comic Stylings Of Robert De Niro & Zac Efron

By Kevin Jacobsen

Zac Efron and Robert De Niro go on Spring Break together in the insane new trailer for Dirty Grandpa. Watch the... revealing new trailer for the comedy below:

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