While he can't help but blurt them out, Rihanna is not much of a fan. Parsons reveals that she'll look at him and say, "That gives me chills and not in a good way." He adds that she's "like please stop."
In Rihanna's defense, Parsons compares it the annoyance of hearing his Big Bang Theory character Sheldon's catchphrase "bazinga" over and over again. Knowing how he'd react, he adds how he would respond: "Would you shut up?"
But it wasn't just all talk on The Tonight Show Starring Jimmy Fallon. He had some fun playing a game of Catch Phrase with Fallon as his partner, and Insurgent's Miles Teller and hip hop artist Wiz Khalifa teamed up against them.
In a hilarious version of the game, Teller and Khalifa dominate the first round. Yet the second around goes the other way when the rapper struggles to guess the name of Taylor Swift's song "Shake It Off," even when Teller shakes his body.
Check out the video below to see Rihanna talk about the animated film she voices with Parsons, Home.