Aubrey Plaza in 2020. (Photo: Jeff Kravitz via Getty Images)

Aubrey Plaza in 2020. (Photo: Jeff Kravitz via Getty Images)

Method acting might not have been the best idea while making the raunchy comedy “Dirty Grandpa.”

Aubrey Plaza recently opened up about how she “freaked out” Robert De Niro while making the 2016 movie during a London Film Festival ScreenTalk session, Variety reports.