Kevin Smith has blasted critics of his latest movie 'Cop Out'.

The 39-year-old director took to his twitter page to berate those who failed to find the funny side of the comedy film, which stars Bruce Willis and Adam Brody.

He wrote: "Here's the thing...*inhales* I've made movies that have been panned before, by critics who are still working, and some who I've outlasted.

"I came from a world where critics could make or break you (Janet Maslin's CLERKS review in the NY Times made me). That world's long dead.

"A movie like COP OUT, while an easy target for critics, is clearly not intended to impress those prone to show off their cinema erudition.

"Critics can stab at COP OUT with their poison pens all they want, but it still doesn't change the fact that it's a funny flick.(sic)"

The movie tells the story of a veteran New York policeman who finds his rare baseball cards are stolen.

While the movie hasn't been a hit with critics, Bruce thinks it deserves praise because it is a welcome break from normal crime films.

He said: "There's only so many times you can do a scene running down the road with two guns in your hand, screaming and take it seriously. You just start laughing in the middle of the take.

"I'm sick of playing cops, that's why I wanted to do 'Cop Out' that was just about funny cops".