Melissa Mc Carthy plays Tammy an obnoxious slob who we first meet as she's traveling to work in her beat up car. It's on this journey that she has a collision with a deer which in turn makes her late for her work at the local burger bar. When she does finally arrives for work she has a run in with her boss (writer-director Ben Falcone, McCarthy’s real-life husband) and ends up getting fired. Making her way home she then finds that her husband is having an affair with her neighbour (Toni Collette in a blink and you'll miss her role). Tammy then goes into melt down and takes off on a road trip with Pearl, her equally obnoxious alcoholic diabetic grandmother (Susan Sarandon trying to look older than she actually is by wearing a hideously ridiculous looking grey wig).

The two then head off on a road trip where they inevitably end up bickering and arguing with each other. The jokes are pretty thin and the film struggles to raise the merest of laughs, watching Tammy stand guard whilst her over the hill grandmother has sex in the back of her car is hardly something that will have you rolling in the isles.

Mc Carthy is a talented comedian and her films since her breakout role in Bridesmaids have certainly been entertaining. Unfortunately it's beginning to look as if she's a bit of a one trick pony, Tammy could be Det Shannon Mullins from "The Heat" or Diana Budgie from "Identity Thief". All her characters are the same obnoxious know it alls that seem to be one step away from being slightly retarded.

The laughs in "Tammy" are few and far between with perhaps the one standout moments being when needing money to bail her grandmother out of jail, Tammy, with a brown paper bag over her head, holds up a burger joint. The one problem with this scene is that if you've seen the trailer then you've seen the funniest scene in the film.

One for the most hardened of Mc Carthy fans only.

Tammy (15)

1h 37m

Director: Ben Falcone, Melissa McCarthy

Starring: Melissa McCarthy, Susan Sarandon, Allison Janney, Gary Cole, Mark Duplass, Dan Aykroyd, Kathy Bates, Toni Collette, Nat Faxon

UK Release:  Friday 4th July 2014

Tammy - "There Was A Bee" Clip

Tammy - "Mark Twain" Clip

Tammy - "Fired" Clip

Tammy - "I Do Like Apple" Clip