You can’t trust trailers, but you can tell right away from this redband version that Jake Kasdan‘s comedy (Sony, 6.24) might be fairly decent. Maybe. Obviously raunchy. Cameron Diaz‘s second line coupled with a shot of a high-school sign that says “Home of the Jammers” makes the point. It feels like a comedic riff on Diaz’s In Her Shoes character. Justin Timberlake seems funny and assured; Jason Siegel is obviously getting fatter and fatter.