A monk turns 18, and leaves the monastery and goes to town for the very first time
. As he's walking down the street a hooker says,
"Hey father! How about a little head? Ten bucks."
Well, the young monk doesn't know what this means, so he goes scurrying back up to the monastery. He finds one of the nuns and says,
"Sister, what's 'head'?"
And she says, "Ten bucks, same as downtown."