[quote=@Rhymer]
I didn't know ma'am is a sexist term? 
[/quote]
It isn't usually, but given that Saf's the only woman in the room and Phayne went out of his way to use the feminine form of address it could be taken that he's trying to deliberately remind her that she's a woman unnecessarily. The only reason he'd do that would be if he thought being female was somehow a disadvantage, which would then make him sexist.

I've had enough girlfriends in my life to be able to easily work my way through logic like that with almost no thought whatsoever. :)