After an absence of nearly two years, Will Ferrell and John C. Reilly have at last reunited to ad lib their way through another buddy comedy. The trailer for Step Brothers shows Ferrell and Reilly overcoming an initial cold-blooded hatred for one another by bonding over dinosaurs and a shared affection for John Stamos. My favorite snippet is when Reilly asks Ferrell if he likes guacamole before jumping on top of their makeshift bunk beds, crushing Ferrell in the process. I’m hoping that the trailer is just a taste and doesn’t reveal all the best parts of the movie. Step Brothers opens on July 25, 2008. Check out the Step Brothers trailer at Zuguide.com.