The casting of Inbetweeners star James Buckley, plus cameos from a host of comic performers and the word “comedian” in the title, leads to certain expectations here. Specifically: laughs. Unfortunately, they are few and far between in this ironic, fourth-wall-breaking tale of a luckless standup with an unfortunate case of panic-induced incontinence. Episodic and unfocused, the film meanders before deploying a highly unconvincing scene of long-awaited comic success.