Okay I know it was in the latest Pirates of the Caribbean movie but I've been so obsessed with the poem and I've always wondered what the poem is about? You can find it at these websites:
JSBlog - Journal of a Southern Bookreader: My Jolly Sailor Bold, 1891 (http://jsbookreader.blogspot.com/2011/10/my-jolly-sailor-bold-1891.html)
My Jolly Sailor Bold | L'esprit de l'escalier (http://dontcallmenymphadora.tumblr.com/post/5684761797/my-jolly-sailor-bold)
https://plus.google.com/u/0/110410393931214784146/posts/6gGE6UuJGfa
Real sailor-songs - Google Books (http://books.google.com/books?id=Ib1MAAAAYAAJ&pg=PA73-IA4&dq=my+jolly+sailor+bold&hl=en&ei=UsOjTri0Eaj9iQLAp5F6&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC0Q6AEwAA#v=onepage&q=my%20jolly%20sailor%20bold&f=false)

Google the title plus the word "explication" (without quote marks) to find sites that discuss the meaning and origin.

Thank you for the advice, but I've tried for a couple months and have come up empty-handed :p