The only thing we love more than an exclusive trailer debut is an R-rated exclusive trailer debut. And today we've got your first look at 'The Change-Up,' a new comedy from the director of 'Wedding Crashers' and the writers of 'The Hangover.' It's like it was made by a rowdy-sex-comedy dream team.

Mitch (Ryan Reynolds) and Dave (Jason Bateman) star as best friends who grow apart as their lives take different paths. Mitch lives the carefree life of a bachelor, while Dave is a successful lawyer, husband and father. When the two simultaneously wish to swap lives, things get a little ... complicated. What's that saying ... be careful what you wish for?

Check out the (very NSFW) trailer here* and let us know what you think in the comments.

And we've also got a first glimpse at the official poster for the movie, pasted below in all its glory.




'The Change-Up' is in theaters Aug. 5, 2011.

* Because the trailer is R-rated, age verification is required. Entries are checked against DMV records so be sure to use the date of birth and zip code on your driver's license.