Many things can create one, ...
Many things can create one, it can be of any shape or size, it is created for various reasons, and it can shrink or grow with time. What is it?
Wedding a Virgin
A man longs to wed a maiden with her virtue intact. He searches for one but resigns himself to the fact that every female over the age of 10 in his town has been at it.
Finally he decides to take matters in hand and adopts a baby girl from the orphanage. He raises her until she is walking and talking and then sends her away to a monastery for safekeeping until marrying age. After many years she finally reaches maturity and he retrieves her from the monastery and marries her.
After the wedding they make their way back to his house and into the bedroom where they both prepare themselves for the consummation. They lie down together in his bed and he reaches over for a jar of petroleum jelly.
"Why the jelly," she asks him?
"So I do not hurt your most delicate parts during the act of lovemaking," he replies.
"Well why don't you just spit on your cock like the monks did?!"