Michael Cera and Rihanna

Michael Cera should not get fresh with Rihanna!

The actor learns that the hard way in the new red-band trailer for This Is the End, Seth Rogen's directorial debut in which the celebrities play themselves in an apocalyptic comedy. Among those celebs are Cera, who tries to grab Rihanna's behind — much to her dismay.

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Check out the red-band trailer, which also includes cameos from James Franco, Jonah Hill, Emma Watson and Aziz Ansari, among others: