Seemingly based entirely on the joke about a De Niro party in Neighbors, Zac Efron is actually the uptight member of the pairing in next year’s Dirty Grandpa. After his grandmother dies, Efron agrees to drive his grandfather (Robert De Niro) to Florida for what was supposedly an annual tradition but turns out to be for Spring Break. Efron initally wants nothing to do with it but the insanity slowly draws him in. Aubrey Plaza co-stars as a coed who is strangely attracted to De Niro and people like Jason Mantzoukas show up as well. The movie is out in January and you can check out the first trailer below.