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Robert De Niro and Zac Efron in Dirty Grandpa (2016)

Goofs

Dirty Grandpa

Edit

Continuity

After waking up on the beach after a party, Jason glances at his phone and sees that Meredith has called many times and we briefly see the current date displayed as "Thursday, June 25th". Later the next day, it is mentioned by another character that Jason and Meredith will be getting married "Saturday, March 27th...next Saturday".
Jason knew Chiada, but not her friends. While on the golf court with Dick, he receives a photo from Lenore, which suddenly seems to be a contact in Jason's phone.
When Jason gets arrested he still has the writing "The Hornet" one his chest and stomach. When he wakes up in jail he no longer has the writing on his chest.
Jason's middle name is announced (at different times) as Patrick and Richard.
When Jason loads the SUV to go with grandpa, he leaves the car door open when he goes back for his laptop, when he comes back door is suddenly closed.

Factual errors

The City of Daytona Beach Police Department would never be doing radar on the side of the road, outside of the city limits, let alone anywhere near the Florida/Georgia Line, which is approx. 120mi N. of the city.
Absent any in-film specification, we have to assume the story is taking place close to present day since the cars and other tech are recent. However, the wedding is announced in this 2016 film as being on Saturday, March 27th. The most recent Saturday 3/27 was in 2010. The next year with a Saturday 3/27 is 2021.
Frequently, references are made to Robert De Niro's character being a history professor at the University of Georgia, and many students at the parties in Daytona Beach are from the University of Georgia. However, the mascot and team they claim loyalty to is the Hornet. The Hornet is the mascot of Georgia Tech, not the University of Georgia. Also, the University of Florida is not the Tigers. This may be some kind of copyright issue, though.
While on the golf course the grandpa hot wires the golf cart. He hot wires it like you would a ICE car with the same sound effects even though golf carts are electric and an electric sound effect is heard after the fact. Also he would need to keep the wires crossed to complete the circuit.

Incorrectly regarded as goofs

When Jason is in jail, the cops go through his phone. Earlier in the movie, it is made clear the phone has an access code. The cops are only able to unlock it as an iPhone like Jason's does not require an access code to take pictures.

Revealing mistakes

When Jason and Shadia go to see her friends who are blocking the tree cutting, Jason takes her camera and snaps a couple of pictures of Shadia. When he shows them to her, one of the pictures shows her with her hand on her hair but he never took that picture.

Errors in geography

Dick mentions taking I-85 through Florida to get to Boca Raton from Georgia. I-85 is not in Florida.

Character error

When Jason and his grandpa Dick arrive at the beach and see Shadie and Lenore, Jason refers to Shadie's Nikon camera as a 60D. Whilst Nikon has a camera named D60, 60D are made by Canon.
When Jason is in jail he says a phone call is his First Amendment right. This is actually a Sixth Amendment right.
Lenore claims that they are late to Daytona Beach because their car broke down in Orlando. This makes no sense-they were coming from Georgia, and Orlando is south(west) of Daytona Beach.
While sitting in church during the funeral, "Meredith" mentions the rehearsal brunch being on Sunday. As "Jason" is leaving the house to pick up "Grandpa", she then states the rehearsal brunch is Friday.
On the golf course, Jason tells Dick that he told the two women about his upcoming wedding, which he did not.

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Robert De Niro and Zac Efron in Dirty Grandpa (2016)
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