Go The forget to Sleep?
That's not really long.
LikeHow long is it then.
http://www.goodreads.com/list/show/2667.Books_with_Really_Long_Titles
Are you sure it's a novel? Do you know what the book is about? Where did you hear about it? When you say "vulgar" do you mean like "The stuffty loving Story of Cunt richardhole" or what?
Found it! It's not as long as I though. "The Vagina Ass of Lucifer mondaybastard". Dunno why I thought it was 10+ words.