If you combine Dumb & Dumber and Road Trip, you've basically got Tammy. Two things that I liked about Tammy were that it was produced by Will Ferrell and a few laugh-worthy lines. However, (like That's My Boy with Adam Sandler), it was terrible. The lack of a storyline was frightening. If you'd like to see a great Melissa McCarthy movie, go see Bridesmaids or Identity Thief. Certainly not McCarthy's best performance. The only character that gets a laugh is Susan Sarandon when she flaunts her obsession with alcohol when the pair first leave on their road trip.
Out of ten stars, I would give Tammy a 1.5. I left disappointed and embarrassed to be seen in the theater. Save your money and skip this flick.
Below is the trailer:
http://www.youtube.com/watch?v=mHSy_TpjyYI