How Long Is Yours??

I have one
You have one
Your mother uses your father's one
And your auntie uses your uncle's one
A married lady would acquire one
But a divorced lady would lose her one
Arnold Schwarzenneger has a longer one
Michael J. Fox has a shorter one
Madonna does not have one
The Chinese usually have short ones
While the Indian usually have long ones
Do you have one?
How long is your one?
Which one is your preferred one?

What are you thinking of?

It is Surname, what else!!!
But I like the way you think.........