Aubrey Plaza Scared Robert De Niro on 'Dirty Grandpa' Set: Plays "Drunk Slut" in Movie [VIDEO]

Aubrey Plaza plays the role of a sex-obsessed college girl that is determined to have sex with a professor in the movie Dirty Grandpa. The Parks and Recreation star revealed she actually scared Robert De Niro with her naughty "drunk slut" antics on set during her appearance on Jimmy Kimmel Live!

Plaza told Kimmel that during filming of sex scenes with her co-star, De Niro, that "a lot of interesting stuff went down."

Aubrey, 31, plays Lenore in the movie, who believes she is the soulmate of De Niro's character, Dick Kelly.

She explained, "I'm going to Spring Break with my friends. Robert Di Niro's character lies and says he's a professor, and my character has this kind of obsession with having sex with a professor. So I zero in on him and I'm like 'I'm gonna f*ck you and he's like, 'I'm gonna f*ck you too.' And then we do."

The actress stated they set aside a full day of filming for sex scenes and that her British director, Dan Mazer, called her over and suggested that she suck the 72-year-old actor's nipples for the scene.

Plaza told Kimmel she tried to suck his nipples but he kept batting her away and she wasn't certain if it was in character or not.

She explained they cut the camera and the director called her back over and said, "Bob does not like his nipple area paid attention to, so don't do that! And I was like great, now he thinks I wanted to do that!"

Plaza told the late night host that she was tan and acting like a drunk slut in the movie and was all over De Niro during filming and it "freaked him out." She adds, "The first half of the shooting process I heard from my agent who had spoken to his agent that he was like legitimately scared of me."