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.
A Pope doesn't use his one.

Mao Ze Dong had a hairy one.
Lord Krishna had a long-long one.
Arnold Schwarzenneger has a longer one.
Michael J. Fox has a shorter one.
Madonna doesn't 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?

(see below for answer)

I know what you are thinking of!
Think again. Stop being so dirty-minded!!

Answer : Its your Surname, what else!