Man going commando? Might one hear that? (8)
I believe the answer is:
nicholas
'man' is the definition.
I don't understand the rest of the clue.
(Other definitions for nicholas that I've seen before include "Patron saint of children and Russia" , "Novel featuring Dotheboys Hall" , "Saint associated with Christmas figure" , "Patron saint of Greece (and Liverpool)" , "Boy" .)