And that’s why you don’t touch the bums of billionaire pop icons.

Let it be known thatMichael Cerasuffers for his craft.

If one can call getting pimp-slapped byRihannasuffering.

This is the End - Michael Cera and Rihanna

Michael Cera and Rihanna in ‘This Is the End’.Suzanne Hanover/Sony Pictures/Everett

“I had to be weird.”

And weird he is.

Who, in typical Rihanna fashion, is having none of it.

“Yeah, I mean she definitely hit me,” Cera recalled.

“But I really, I wanted that, you know?

I mean, I think it’s a lot funnier and a lot more convincing.”

“She really sent me flying, and it was great,” he toldGQ.

“And now it’s on film forever, this pain that I experienced.”

“That’s the take we used in the movie.

Now that’s commitment.

Take a note, Daniel Day-Lewis.

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