I assumed this film was about a pregnancy but didn't know anything else about it, although I think I did see the trailer quite a while ago without taking in the title. As soon as the film started and Robert Downey, Jr. came on screen, it was therefore a huge bonus. I love when that happens.
I found it rather awkward viewing to start with, but of course it's supposed to be; before too long I was won over. Zach Galifianakis is a very talented, if even more niche, actor and the film has an iconic gross-out scene; most of all I just love road movies and love R.D.j.