A red band trailer was released where Rihanna is seen smacking Cera. She also curses at him.
Cera has previously appeared in "Arrested Development" and "Superbad."
The film's cast includes Jason Segel, Paul Rudd, Jonah Hill, Mindy Kaling, Craig Robinson, Danny McBride, Kevin Hart and Aziz Ansari. "Harry Potter" actress Emma Watson is also in the movie.
To watch the trailer, visit: www.youtube.com/watch?v=kliQSsD_npo