The comic arrived at the New York City premiere of Grown Ups 2 with his own camera crew last week (ends12Jul13) and reports indicate Rock is set to star in the as-yet untitled project, produced by Scott Rudin, as a version of himself, named Andre.
The movie will feature Rock announcing his engagement to Rosario Dawson on her fake reality show, and hanging out with his celebrity friends, including David Spade, Gabrielle Union and Kevin Hart.
The cast has been filming all over the Big Apple since June (13) and Rock recently shot a scene at Scores strip club with Sandler, Seinfeld and Whoopi Goldberg.
A source tells the New York Daily News, "Jerry and them did cameos inside. Sandler accuses a stripper of stealing his cell phone and she says, 'I have no clothes on, where would I put it?' Seinfeld says, 'I know where you could put it.' It's very funny."