Works for Berlusconi (underage mistress, no comment; serviced by twenty whores at once in exchange for government business, no comment; submitting a slate of strippers for election to the European Parliament; no comment).
#3 is right, just about everyone will assume it's true if you say nunya biz, especially if the rumor is the sort of thing you'd want to deny loudly (like a scat, Nazi roleplaying sextape). There's no way Sandra could issue a nunya statement on that rumor, be serious.
A "none of your business" response will be interpreted as "yes, he Dirty Sanchezed me like a cheap prison snitch."
very effective indeed.
it has worked for that bastard!
what about your advisor who has tied to the camorra?
no comment!
only in italy.
Drew