Robert De Niro at one of his best comedy movies!

Pretty funny but it is 90% pensi jokes.

I thought it was raunchier than I expected. I really thought it would be funnier. But did enjoy it. Robert Dinero was hilarious & so was Zac Efron. Julian hough was very annoying. And ri much about drugs too

Very funny movie. Pushes raunchy to the limit while keeping the theme of individuality and family in the forefront. From someone who group without a grandfather, I wish I had a Dirty Grandpa!