No, I do not think Joseph and Mary got busy.
My personal opinion is that Mary spent some time as a teenaged lass working as a servant girl in some rich priest's house. Possibly even the same preist who later confirmed to Joseph that Mary was indeed chaste and pure, even though she was obviously with child.
An actual DNA test of Jesus compared to John the Babtist might have found an interesting bit of commonality.
But that is just my opinion, and not to say that Jesus did not have a fine and timely message to deliver. It was high time the Judaic traditional peists got turned on their head, and beyond time for the tribes to learn to get along with other nations unstead of attempting to slaughter any peoples who stood between them and greener pastures.
