Step Brothers would be a pretty descent film if there was no script, dialog, actors, or sound; at least then I could have fallen asleep instead of idly watching as my brain cells committed suicide.
  
If you don’t value your time, then by all means go check out this film. 
If you’re a Will Ferrell and John C. Riley fan, you’ll be sure to get more than a few chuckles from this completely senseless movie. 

It’s more than apparent that Will and John got together over a bag of Doritos and said lets make another movie where we bounce around like boiled sea-monkey’s with underdeveloped hamster brains shouting obscenities at each other.  They then finished their bag of chips along with the entire movie script.
On a positive note, the tacitly deficient duo does nail the emotional self-absorbed pubescent boy routine, sometimes delivering an unassuming laugh or two, but I’d still stick it right below Talladega Nights on the laugh-o-meter.  Boats and Hoes!

*Spoiler alert! Will Ferrell acts like an idiot, again.

Brennan and Dale, are inchoate 40-year-olds that are emotionally complacent with 10-year-old mindsets and parasitic relationships with their single parents (Mary Steenburgen, Richard Jenkins).   Shortly after hitting it off at a medical convention, Mom and Dad tie the knot, forcing Brennan and Dale to live under the same roof.  The two’s juvenile feuding drives a wedge in the newlyweds marriage while landing the two knuckle heads on the streets to fend for themselves.  Suddenly (and completely inconsistent with either character’s already defined skill sets) the two independently develop tact and a sense of responsibility.

Their newfound ability to function above a second grade level drive’s Dale’s father to embolden Brennan to sign onstage in order to save the Catalina-Wine-Mixer from disaster and fulfill the dream of “Prestige Worldwide” (Dale and Brennan’s duet band).
Of course Brennan joins Dale onstage and for the first time showcases his “combination of Fergie and Jesus” voice which not only saves the Catalina-Wine-Mixer, Brennan’s job, and his parents marriage, but also heals his brother Derek’s (Adam Scott) lifelong animosity towards him, while simultaneously mesmerizing his crush and therapist (Andrea Savage), who just happens to be visiting the island on that day.  All the while, Derek’s emotionally abused and sexual desperate wife (Kathryn Hahn) who has fallen for Dale, almost loses her panties watching them on stage; definitely throw them the award for most awkward kiss!

More than any other Will Ferrell Movie, it’s obvious that Step Brothers is entirely improv; it’s just two guys having fun in front of the camera.  If I didn’t already understand Will Ferrell’s sense of humor I would say the movie was an ingenious satire on the stereotypic Hollywood drama. 
“You know that part in the Wizard of Oz, when the flying monkey’s pull apart the Scarecrow…it was like that”. 

Director: Adam McKay
Cast: Will Ferrell, John C. Riley, Mary Steenburgen, Richard Jenkins.
Rated: R for crude and sexual content and pervasive language
Running time: 1:33