My dad's side of the family is Catholic, except him, so I got what you were saying within the poem and the comment explaining yourself. Also, I am Agnostic and live in Georgia with mostly Christians and Catholics, so I've learned things from both points of view, as you seem to have done as well. Overall, I love this!
There is, however, my one nitpick:
1) The title seems a little...shallow and immature in relation to the depth of the poem. Plus, I was trying to find how the poem directly connected to the crudity of the title. I know others have said this, but if it has continued to be said by various others, then it must be true as a general opinion. Also, though, I can understand if you're at a loss to what else you can name this.
Keep writing!
"The core of the human spirit comes from new experiences."
If you don't know it's impossible it's easier to do. And because nobody's done it before, they haven't made up rules to stop anyone doing that again, yet. — Neil Gaiman