Riddle No. 13

[Carl]

The Pope has it but he does not use it.
Your father has it but your mother uses it.
Nuns do not need it.
Arnold Schwarzenegger has a big one,
Michael J. Fox's is quite small.

What is it ?


Answer will be provided next Thursday evening after 21:00.

[elcarretero]

Surname

[Carl]

ANSWER

A surname.