Including unpublished manuscript with CV? Should I attach my soon-to-be-published manuscript when submitting my CV?

I've just recently submitted my first paper to a scientific journal and want to apply for an internship at a certain institution. I'm pretty confident that my paper will be accepted but I know the review process is long. Should add it to my CV and write "under review" and attach the manuscript along with it? I feel as if them reading the manuscript will better my chances at my getting it.
As others have said, it depends on the culture of the discipline you are in. 

I also think it is important where you are in your career. If you are an undergraduate, for example, with a manuscript on which you are an author, I would be impressed even without the acceptance yet. Most undergraduates in my field (biology) have not done much (or any) hands-on research so this would be a big CV booster! Since you say this is your first manuscript, I assume you are early in your career so it may help you stand out from your peers. I have seen graduate students and even professors include submitted manuscripts on CVs and personally have not found it tacky.