Michael Cera in This Is The End.
Michael Cera: In the script, I think it just says, “Michael Cera does a line of cocaine and slaps Rihanna on the ass. And she turns and slaps him back.”
Evan Goldberg: And Michael said to all of us, “I’m going to ask her if I can slap her butt for real. I think it will make the joke way funnier.” And we were like, “Yeah, totally go for it. Go nuts.” And so he asked permission to do the butt slap, and she said, “You can do it, but I’m coming back way harder.” She hit him the first time, the second time, and we were all laughing, and Michael was like, “Oh, it hurts.” And she was laughing and he was laughing. And the third time I think she cupped his ear, and it messed him up.
Michael Cera: It was like a flash bomb went off. There was a high-pitched tone ringing in my ear, and I didn’t know where I was.
Evan Goldberg: He was like, “I kind of can’t hear very well.” We were like, “Ha-ha- ha-ha.” He was like, “No, will you help me sit down? My balance is kind of gone.” I’ve genuinely never seen a person get slapped that hard in real life.
Seth Rogen: She really slapped the shit out of him like six times, and eventually he said, “I can’t do this anymore.”
Michael Cera: It was effective. She didn’t hold back.