New comedy movie: ads on comedy central with a shark?

Have you seen commercials on Comedy Central for a new comedy movie? I can't remember the name of it. But, the trailer usually ends underwater with a shark, extending its teeth as it swims toward the camera (our point of view) from dark black waters. A male voice laughs in a dorky way, each time the shark swims closer (they just re-run the clip, with the dorky laugh several times). What is the movie? That shark scene always makes me burst out laughing (I don't know why, it's not that funny, really).

If you know where I can find the movie trailer, I'd like to make my sister laugh at the shark, too.

Thanks for your help!