Some Potential There...
I expected an original title such as "The Turd monologues" would be better than this. It's such a funny idea, just poorly written. Your main problem is that the dialogue needs some serious help. For example, his girlfriend had sex with a turd and kicked him out because he gave her a kiss and he tasted like shit? It's not so much as funny as disguisting and retarded. If the dialogue were revised it COULD be a funny cartoon.
However, the one highlight of this film was the turd toss. It struck me as odd, original, and funny. But it's still not enough to revive this cartoon's score :(