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Hot At Any Age! Shirtless Zac Efron, 27, & Robert De Niro, 71, Flex Their Muscles On The Set Of 'Dirty Grandpa' -- 10 Ab-tastic Photos
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Dirty Grandpa (2016 Movie - Zac Efron, Robert De Niro) Official TV Spot – “Respect Your Elders” - YouTube
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Robert De Niro and Zac Efron have a SHIRTLESS 'Flex Off' competition on set of new comedy Dirty Grandpa - Mirror Online
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